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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_07271595ED89D4B30FC1AA7CACFA862E_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_07271595ED89D4B30FC1AA7CACFA862E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Domain]</link:label>
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    <link:label id="lab_us-gaap_LandMember_6A2C8BF30E3510659235AA7CACFB72A0_terseLabel_en-US" xlink:label="lab_us-gaap_LandMember_6A2C8BF30E3510659235AA7CACFB72A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land</link:label>
    <link:label id="lab_us-gaap_LandMember_6A2C8BF30E3510659235AA7CACFB72A0_label_en-US" xlink:label="lab_us-gaap_LandMember_6A2C8BF30E3510659235AA7CACFB72A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land [Member]</link:label>
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    <link:label id="lab_us-gaap_BuildingAndBuildingImprovementsMember_5398CB177457300253E1AA7CACFB6E68_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingAndBuildingImprovementsMember_5398CB177457300253E1AA7CACFB6E68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Building and improvements</link:label>
    <link:label id="lab_us-gaap_BuildingAndBuildingImprovementsMember_5398CB177457300253E1AA7CACFB6E68_label_en-US" xlink:label="lab_us-gaap_BuildingAndBuildingImprovementsMember_5398CB177457300253E1AA7CACFB6E68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Building and Building Improvements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_5398CB177457300253E1AA7CACFB6E68" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BuildingAndBuildingImprovementsMember_5398CB177457300253E1AA7CACFB6E68" xlink:to="lab_us-gaap_BuildingAndBuildingImprovementsMember_5398CB177457300253E1AA7CACFB6E68" xlink:type="arc" />
    <link:label id="lab_wp_FurnitureAndEquipmentMember_111EB8FD27253F4C7A43AA7CACFBD893_terseLabel_en-US" xlink:label="lab_wp_FurnitureAndEquipmentMember_111EB8FD27253F4C7A43AA7CACFBD893" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Furniture and equipment</link:label>
    <link:label id="lab_wp_FurnitureAndEquipmentMember_111EB8FD27253F4C7A43AA7CACFBD893_label_en-US" xlink:label="lab_wp_FurnitureAndEquipmentMember_111EB8FD27253F4C7A43AA7CACFBD893" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Furniture and Equipment [Member]</link:label>
    <link:label id="lab_wp_FurnitureAndEquipmentMember_111EB8FD27253F4C7A43AA7CACFBD893_documentation_en-US" xlink:label="lab_wp_FurnitureAndEquipmentMember_111EB8FD27253F4C7A43AA7CACFBD893" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities and tangible personal property used to produce goods and services.</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_FurnitureAndEquipmentMember_111EB8FD27253F4C7A43AA7CACFBD893" xlink:to="lab_wp_FurnitureAndEquipmentMember_111EB8FD27253F4C7A43AA7CACFBD893" xlink:type="arc" />
    <link:label id="lab_us-gaap_ComputerSoftwareIntangibleAssetMember_0863E0B492B6ACEEB86FAA7CACFB0286_terseLabel_en-US" xlink:label="lab_us-gaap_ComputerSoftwareIntangibleAssetMember_0863E0B492B6ACEEB86FAA7CACFB0286" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Software</link:label>
    <link:label id="lab_us-gaap_ComputerSoftwareIntangibleAssetMember_0863E0B492B6ACEEB86FAA7CACFB0286_label_en-US" xlink:label="lab_us-gaap_ComputerSoftwareIntangibleAssetMember_0863E0B492B6ACEEB86FAA7CACFB0286" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Computer Software, Intangible Asset [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_0863E0B492B6ACEEB86FAA7CACFB0286" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LeaseholdImprovementsMember_A4D590638C12A098A591AA7CACFC228D_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseholdImprovementsMember_A4D590638C12A098A591AA7CACFC228D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leasehold improvements</link:label>
    <link:label id="lab_us-gaap_LeaseholdImprovementsMember_A4D590638C12A098A591AA7CACFC228D_label_en-US" xlink:label="lab_us-gaap_LeaseholdImprovementsMember_A4D590638C12A098A591AA7CACFC228D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leasehold Improvements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_A4D590638C12A098A591AA7CACFC228D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseholdImprovementsMember_A4D590638C12A098A591AA7CACFC228D" xlink:to="lab_us-gaap_LeaseholdImprovementsMember_A4D590638C12A098A591AA7CACFC228D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConstructionInProgressMember_2DE540309E68E35E0B20AA7CACFC79E7_terseLabel_en-US" xlink:label="lab_us-gaap_ConstructionInProgressMember_2DE540309E68E35E0B20AA7CACFC79E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Work in progress</link:label>
    <link:label id="lab_us-gaap_ConstructionInProgressMember_2DE540309E68E35E0B20AA7CACFC79E7_label_en-US" xlink:label="lab_us-gaap_ConstructionInProgressMember_2DE540309E68E35E0B20AA7CACFC79E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction in Progress [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConstructionInProgressMember" xlink:label="loc_us-gaap_ConstructionInProgressMember_2DE540309E68E35E0B20AA7CACFC79E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConstructionInProgressMember_2DE540309E68E35E0B20AA7CACFC79E7" xlink:to="lab_us-gaap_ConstructionInProgressMember_2DE540309E68E35E0B20AA7CACFC79E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentMember_4C085686066D7E5DB0C5AA7CACFC0B4B_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentMember_4C085686066D7E5DB0C5AA7CACFC0B4B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property equipment and software</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentMember_4C085686066D7E5DB0C5AA7CACFC0B4B_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentMember_4C085686066D7E5DB0C5AA7CACFC0B4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentMember" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentMember_4C085686066D7E5DB0C5AA7CACFC0B4B" xlink:type="locator" />
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    <link:label id="lab_srt_RangeAxis_52A36FE637CB53679876AA7CACFCED17_terseLabel_en-US" xlink:label="lab_srt_RangeAxis_52A36FE637CB53679876AA7CACFCED17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:label id="lab_srt_RangeAxis_52A36FE637CB53679876AA7CACFCED17_label_en-US" xlink:label="lab_srt_RangeAxis_52A36FE637CB53679876AA7CACFCED17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_52A36FE637CB53679876AA7CACFCED17" xlink:type="locator" />
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    <link:label id="lab_srt_RangeMember_8045A5A3D7F90BE578C1AA7CACFCC13A_label_en-US" xlink:label="lab_srt_RangeMember_8045A5A3D7F90BE578C1AA7CACFCC13A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_8045A5A3D7F90BE578C1AA7CACFCC13A" xlink:type="locator" />
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    <link:label id="lab_srt_MinimumMember_D9BC235668754B1CAB38AA7CACFD714A_label_en-US" xlink:label="lab_srt_MinimumMember_D9BC235668754B1CAB38AA7CACFD714A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minimum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_D9BC235668754B1CAB38AA7CACFD714A" xlink:type="locator" />
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    <link:label id="lab_srt_MaximumMember_DAA82DB62CE12494AEC9AA7CACFD6EE9_terseLabel_en-US" xlink:label="lab_srt_MaximumMember_DAA82DB62CE12494AEC9AA7CACFD6EE9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_DAA82DB62CE12494AEC9AA7CACFD6EE9" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_925405D73580E7F8B6EBAA7CACFDF751_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_925405D73580E7F8B6EBAA7CACFDF751" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_925405D73580E7F8B6EBAA7CACFDF751_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_925405D73580E7F8B6EBAA7CACFDF751" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_925405D73580E7F8B6EBAA7CACFDF751" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_99E52DCC0921A8479A49AA7CACFD6105_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_99E52DCC0921A8479A49AA7CACFD6105" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Useful Life</link:label>
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_EDBA0F7AA684D0CC3B6BAA7CACFE0EE7_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_EDBA0F7AA684D0CC3B6BAA7CACFE0EE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Gross</link:label>
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    <link:loc xlink:href="wp-20181231.xsd#wp_ClearingSettlementandSponsorshipAgreementandTreasuryManagementAgreementMember" xlink:label="loc_wp_ClearingSettlementandSponsorshipAgreementandTreasuryManagementAgreementMember_9D6351593615057E754B020C051CF0C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_ClearingSettlementandSponsorshipAgreementandTreasuryManagementAgreementMember_9D6351593615057E754B020C051CF0C0" xlink:to="lab_wp_ClearingSettlementandSponsorshipAgreementandTreasuryManagementAgreementMember_9D6351593615057E754B020C051CF0C0" xlink:type="arc" />
    <link:label id="lab_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57_terseLabel_en-US" xlink:label="lab_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other non-material services</link:label>
    <link:label id="lab_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57_label_en-US" xlink:label="lab_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Services Agreement [Member]</link:label>
    <link:label id="lab_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57_documentation_en-US" xlink:label="lab_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents other non-material services which may include IT services, back-office support, employee related services, product development, risk management and general business resources.</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_OtherServicesAgreementMember" xlink:label="loc_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57" xlink:to="lab_wp_OtherServicesAgreementMember_E3E9278358F91BAA33B7020C051C8A57" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_F1F818A9081E5A50C541020C051C9990_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_F1F818A9081E5A50C541020C051C9990" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transaction</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_F1F818A9081E5A50C541020C051C9990_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_F1F818A9081E5A50C541020C051C9990" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_F1F818A9081E5A50C541020C051C9990" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_F1F818A9081E5A50C541020C051C9990" xlink:to="lab_us-gaap_RelatedPartyTransactionLineItems_F1F818A9081E5A50C541020C051C9990" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_1DD10D7541798EC40366020C051DF907_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_1DD10D7541798EC40366020C051DF907" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ownership percentage by Fifth Third</link:label>
    <link:label id="lab_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_1DD10D7541798EC40366020C051DF907_label_en-US" xlink:label="lab_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_1DD10D7541798EC40366020C051DF907" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_1DD10D7541798EC40366020C051DF907" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_1DD10D7541798EC40366020C051DF907" xlink:to="lab_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_1DD10D7541798EC40366020C051DF907" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueFromRelatedParties_5FF2C161240EC45597A0020C051D3D09_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromRelatedParties_5FF2C161240EC45597A0020C051D3D09" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fifth Third related party revenue</link:label>
    <link:label id="lab_us-gaap_RevenueFromRelatedParties_5FF2C161240EC45597A0020C051D3D09_label_en-US" xlink:label="lab_us-gaap_RevenueFromRelatedParties_5FF2C161240EC45597A0020C051D3D09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from Related Parties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromRelatedParties" xlink:label="loc_us-gaap_RevenueFromRelatedParties_5FF2C161240EC45597A0020C051D3D09" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromRelatedParties_5FF2C161240EC45597A0020C051D3D09" xlink:to="lab_us-gaap_RevenueFromRelatedParties_5FF2C161240EC45597A0020C051D3D09" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableRelatedParties_D39B3697EE84AB3972DF020C051D2D66_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedParties_D39B3697EE84AB3972DF020C051D2D66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fifth Third accounts receivable</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableRelatedParties_D39B3697EE84AB3972DF020C051D2D66_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedParties_D39B3697EE84AB3972DF020C051D2D66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Related Parties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableRelatedParties" xlink:label="loc_us-gaap_AccountsReceivableRelatedParties_D39B3697EE84AB3972DF020C051D2D66" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableRelatedParties_D39B3697EE84AB3972DF020C051D2D66" xlink:to="lab_us-gaap_AccountsReceivableRelatedParties_D39B3697EE84AB3972DF020C051D2D66" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsPayableRelatedPartiesCurrent_B6D0A164F38EFA4C1E3A020C051D1D89_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableRelatedPartiesCurrent_B6D0A164F38EFA4C1E3A020C051D1D89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fifth Third Accounts payable and accrued expense</link:label>
    <link:label id="lab_us-gaap_AccountsPayableRelatedPartiesCurrent_B6D0A164F38EFA4C1E3A020C051D1D89_label_en-US" xlink:label="lab_us-gaap_AccountsPayableRelatedPartiesCurrent_B6D0A164F38EFA4C1E3A020C051D1D89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable, Related Parties, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableRelatedPartiesCurrent" xlink:label="loc_us-gaap_AccountsPayableRelatedPartiesCurrent_B6D0A164F38EFA4C1E3A020C051D1D89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableRelatedPartiesCurrent_B6D0A164F38EFA4C1E3A020C051D1D89" xlink:to="lab_us-gaap_AccountsPayableRelatedPartiesCurrent_B6D0A164F38EFA4C1E3A020C051D1D89" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_646F856210B9940A99C1020C051D5A51_terseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_646F856210B9940A99C1020C051D5A51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current portion of note payable held by Fifth Third</link:label>
    <link:label id="lab_us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_646F856210B9940A99C1020C051D5A51_label_en-US" xlink:label="lab_us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_646F856210B9940A99C1020C051D5A51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes Payable, Related Parties, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableRelatedPartiesClassifiedCurrent" xlink:label="loc_us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_646F856210B9940A99C1020C051D5A51" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_646F856210B9940A99C1020C051D5A51" xlink:to="lab_us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_646F856210B9940A99C1020C051D5A51" xlink:type="arc" />
    <link:label id="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE_verboseLabel_en-US" xlink:label="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Current portion of Fifth Third callable/puttable TRA Obligations</link:label>
    <link:label id="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE_label_en-US" xlink:label="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax Receivable Agreements Obligation to Related Parties Current</link:label>
    <link:label id="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE_documentation_en-US" xlink:label="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The carrying value as of the balance sheet date of the current portion of liabilities related to the tax receivable agreements to related parties.</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent" xlink:label="loc_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE" xlink:to="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesCurrent_09E0BD66367AA29DA83A020C051EA0EE" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotesPayableRelatedPartiesNoncurrent_D030B50538C37E85DC30020C051E30FD_verboseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableRelatedPartiesNoncurrent_D030B50538C37E85DC30020C051E30FD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Non-current note payable held by Fifth Third</link:label>
    <link:label id="lab_us-gaap_NotesPayableRelatedPartiesNoncurrent_D030B50538C37E85DC30020C051E30FD_label_en-US" xlink:label="lab_us-gaap_NotesPayableRelatedPartiesNoncurrent_D030B50538C37E85DC30020C051E30FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes Payable, Related Parties, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableRelatedPartiesNoncurrent" xlink:label="loc_us-gaap_NotesPayableRelatedPartiesNoncurrent_D030B50538C37E85DC30020C051E30FD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesPayableRelatedPartiesNoncurrent_D030B50538C37E85DC30020C051E30FD" xlink:to="lab_us-gaap_NotesPayableRelatedPartiesNoncurrent_D030B50538C37E85DC30020C051E30FD" xlink:type="arc" />
    <link:label id="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01_terseLabel_en-US" xlink:label="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax receivable agreement obligations to related parties</link:label>
    <link:label id="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01_label_en-US" xlink:label="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax Receivable Agreements Obligation to Related Parties Long Term Portion</link:label>
    <link:label id="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01_documentation_en-US" xlink:label="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The carrying value as of the balance sheet date of the long term portion of liabilities related to the tax receivable agreements to related parties</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion" xlink:label="loc_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01" xlink:to="lab_wp_TaxReceivableAgreementsObligationtoRelatedPartiesLongTermPortion_0E2F2AEDF6A006AED0FE020C051E4F01" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_74BEBE06825E11900938020C051E8A1A_terseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_74BEBE06825E11900938020C051E8A1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fifth Third note payable</link:label>
    <link:label id="lab_us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_74BEBE06825E11900938020C051E8A1A_label_en-US" xlink:label="lab_us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_74BEBE06825E11900938020C051E8A1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes Payable, Related Parties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_74BEBE06825E11900938020C051E8A1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_74BEBE06825E11900938020C051E8A1A" xlink:to="lab_us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_74BEBE06825E11900938020C051E8A1A" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestExpenseRelatedParty_7BD48C4D3982B70438C8020C051F9848_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseRelatedParty_7BD48C4D3982B70438C8020C051F9848" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest expense associated with related party debt</link:label>
    <link:label id="lab_us-gaap_InterestExpenseRelatedParty_7BD48C4D3982B70438C8020C051F9848_label_en-US" xlink:label="lab_us-gaap_InterestExpenseRelatedParty_7BD48C4D3982B70438C8020C051F9848" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Expense, Related Party</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpenseRelatedParty" xlink:label="loc_us-gaap_InterestExpenseRelatedParty_7BD48C4D3982B70438C8020C051F9848" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpenseRelatedParty_7BD48C4D3982B70438C8020C051F9848" xlink:to="lab_us-gaap_InterestExpenseRelatedParty_7BD48C4D3982B70438C8020C051F9848" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_39513358A054E5D5E4EA020C051F781B_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_39513358A054E5D5E4EA020C051F781B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitment fees associated with related party debt</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_39513358A054E5D5E4EA020C051F781B_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_39513358A054E5D5E4EA020C051F781B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Commitment Fee Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeeAmount" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_39513358A054E5D5E4EA020C051F781B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_39513358A054E5D5E4EA020C051F781B" xlink:to="lab_us-gaap_LineOfCreditFacilityCommitmentFeeAmount_39513358A054E5D5E4EA020C051F781B" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_D6DC93C0EDE8C8277933020C051F9260_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_D6DC93C0EDE8C8277933020C051F9260" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related party expense to Fifth Third</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_D6DC93C0EDE8C8277933020C051F9260_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_D6DC93C0EDE8C8277933020C051F9260" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction, Expenses from Transactions with Related Party</link:label>
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    <link:label id="lab_us-gaap_Cash_1045AC57F1BAAE40683B020C051FA7E8_terseLabel_en-US" xlink:label="lab_us-gaap_Cash_1045AC57F1BAAE40683B020C051FA7E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deposits held at Fifth Third</link:label>
    <link:label id="lab_us-gaap_Cash_1045AC57F1BAAE40683B020C051FA7E8_label_en-US" xlink:label="lab_us-gaap_Cash_1045AC57F1BAAE40683B020C051FA7E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_A94B8793A101BACFB54429F8B825644C_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_A94B8793A101BACFB54429F8B825644C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
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    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_7E0378E0ED24CFB4B1AB29F8B82FC32E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_7E0378E0ED24CFB4B1AB29F8B82FC32E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition [Axis]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_7E0378E0ED24CFB4B1AB29F8B82FC32E_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_7E0378E0ED24CFB4B1AB29F8B82FC32E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_7E0378E0ED24CFB4B1AB29F8B82FC32E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_F7FC1BCF13028C48185829F8B82F03E8_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_F7FC1BCF13028C48185829F8B82F03E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition, Acquiree</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_F7FC1BCF13028C48185829F8B82F03E8_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_F7FC1BCF13028C48185829F8B82F03E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_F7FC1BCF13028C48185829F8B82F03E8" xlink:type="locator" />
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    <link:label id="lab_wp_MonerisSolutionsInc.Member_A7A535B543B4120B879729F8B82F2156_terseLabel_en-US" xlink:label="lab_wp_MonerisSolutionsInc.Member_A7A535B543B4120B879729F8B82F2156" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Moneris Solutions, Inc.</link:label>
    <link:label id="lab_wp_MonerisSolutionsInc.Member_A7A535B543B4120B879729F8B82F2156_label_en-US" xlink:label="lab_wp_MonerisSolutionsInc.Member_A7A535B543B4120B879729F8B82F2156" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Moneris Solutions, Inc. [Member]</link:label>
    <link:label id="lab_wp_MonerisSolutionsInc.Member_A7A535B543B4120B879729F8B82F2156_documentation_en-US" xlink:label="lab_wp_MonerisSolutionsInc.Member_A7A535B543B4120B879729F8B82F2156" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Moneris Solutions, Inc.</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_MonerisSolutionsInc.Member" xlink:label="loc_wp_MonerisSolutionsInc.Member_A7A535B543B4120B879729F8B82F2156" xlink:type="locator" />
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    <link:label id="lab_wp_PaymetricHoldingsInc.Member_66A832D5DF6EE9CC79D829F8B82FB445_terseLabel_en-US" xlink:label="lab_wp_PaymetricHoldingsInc.Member_66A832D5DF6EE9CC79D829F8B82FB445" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Paymetric Holdings, Inc.</link:label>
    <link:label id="lab_wp_PaymetricHoldingsInc.Member_66A832D5DF6EE9CC79D829F8B82FB445_label_en-US" xlink:label="lab_wp_PaymetricHoldingsInc.Member_66A832D5DF6EE9CC79D829F8B82FB445" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Paymetric Holdings, Inc. [Member]</link:label>
    <link:label id="lab_wp_PaymetricHoldingsInc.Member_66A832D5DF6EE9CC79D829F8B82FB445_documentation_en-US" xlink:label="lab_wp_PaymetricHoldingsInc.Member_66A832D5DF6EE9CC79D829F8B82FB445" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Paymetric Holdings, Inc. [Member]</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_PaymetricHoldingsInc.Member" xlink:label="loc_wp_PaymetricHoldingsInc.Member_66A832D5DF6EE9CC79D829F8B82FB445" xlink:type="locator" />
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    <link:label id="lab_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89_terseLabel_en-US" xlink:label="lab_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Technology Solutions</link:label>
    <link:label id="lab_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89_label_en-US" xlink:label="lab_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Technology Solutions [Member]</link:label>
    <link:label id="lab_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89_documentation_en-US" xlink:label="lab_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Technology Solutions</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_TechnologySolutionsMember" xlink:label="loc_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89" xlink:to="lab_wp_TechnologySolutionsMember_795C5499C95E0B2DE3D929F8B839AF89" xlink:type="arc" />
    <link:label id="lab_wp_MerchantServicesMember_36C296B91D01A4E66F4829F8B839F269_terseLabel_en-US" xlink:label="lab_wp_MerchantServicesMember_36C296B91D01A4E66F4829F8B839F269" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Merchant Solution</link:label>
    <link:label id="lab_wp_MerchantServicesMember_36C296B91D01A4E66F4829F8B839F269_label_en-US" xlink:label="lab_wp_MerchantServicesMember_36C296B91D01A4E66F4829F8B839F269" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Merchant Services [Member]</link:label>
    <link:label id="lab_wp_MerchantServicesMember_36C296B91D01A4E66F4829F8B839F269_documentation_en-US" xlink:label="lab_wp_MerchantServicesMember_36C296B91D01A4E66F4829F8B839F269" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the Merchant Services segment, which provides merchant acquiring and payment processing services to large national merchants, regional and small-to-mid sized businesses.</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_MerchantServicesMember" xlink:label="loc_wp_MerchantServicesMember_36C296B91D01A4E66F4829F8B839F269" xlink:type="locator" />
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    <link:label id="lab_wp_FinancialInstitutionServicesMember_6D72C501EE42EC42C0B829F8B8394CAE_terseLabel_en-US" xlink:label="lab_wp_FinancialInstitutionServicesMember_6D72C501EE42EC42C0B829F8B8394CAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuer Solution</link:label>
    <link:label id="lab_wp_FinancialInstitutionServicesMember_6D72C501EE42EC42C0B829F8B8394CAE_label_en-US" xlink:label="lab_wp_FinancialInstitutionServicesMember_6D72C501EE42EC42C0B829F8B8394CAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Institution Services [Member]</link:label>
    <link:label id="lab_wp_FinancialInstitutionServicesMember_6D72C501EE42EC42C0B829F8B8394CAE_documentation_en-US" xlink:label="lab_wp_FinancialInstitutionServicesMember_6D72C501EE42EC42C0B829F8B8394CAE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the Financial Institution Services, which provides card issuer processing, payment network processing, fraud protection, card production, prepaid program management, automated teller machine (ATM) driving and network gateway and switching services.</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_FinancialInstitutionServicesMember" xlink:label="loc_wp_FinancialInstitutionServicesMember_6D72C501EE42EC42C0B829F8B8394CAE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_GoodwillLineItems_0697FE44506BBB641E3429F8B839C70D_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_0697FE44506BBB641E3429F8B839C70D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_us-gaap_GoodwillLineItems_0697FE44506BBB641E3429F8B839C70D_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_0697FE44506BBB641E3429F8B839C70D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
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    <link:label id="lab_us-gaap_ReorganizationItems_ABCF4971167739AFD51729F8B839DD16_terseLabel_en-US" xlink:label="lab_us-gaap_ReorganizationItems_ABCF4971167739AFD51729F8B839DD16" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Re-allocation of Legacy Vantiv for reorganized reportable segments</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentLineItems_276521294B50FF631B0510A41BA5EF52_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_276521294B50FF631B0510A41BA5EF52" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_276521294B50FF631B0510A41BA5EF52_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_276521294B50FF631B0510A41BA5EF52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_E62FCC267FD081B9B53810A41BA5D2D1_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_E62FCC267FD081B9B53810A41BA5D2D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, gross</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_E62FCC267FD081B9B53810A41BA5D2D1_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_E62FCC267FD081B9B53810A41BA5D2D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Gross</link:label>
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    <link:label id="lab_us-gaap_LongTermDebtCurrent_D8D1A32003D2FE71C84510A41BA5D6DB_negatedLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_D8D1A32003D2FE71C84510A41BA5D6DB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: Current portion of note payable</link:label>
    <link:label id="lab_us-gaap_LongTermDebtCurrent_D8D1A32003D2FE71C84510A41BA5D6DB_label_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_D8D1A32003D2FE71C84510A41BA5D6DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Current Maturities</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscount_1697D53818DDB85F09DC10A41BA5D7CC_negatedLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscount_1697D53818DDB85F09DC10A41BA5D7CC" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less: Original issue discount</link:label>
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    <link:label id="lab_us-gaap_DeferredFinanceCostsNoncurrentNet_B767F8E70F378843AF2110A41BA56163_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNoncurrentNet_B767F8E70F378843AF2110A41BA56163" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Issuance Costs, Noncurrent, Net</link:label>
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    <link:label id="lab_us-gaap_LongTermDebtNoncurrent_DE78FBE969AE6897F88F10A41BA5959A_label_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_DE78FBE969AE6897F88F10A41BA5959A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Excluding Current Maturities</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_DE78FBE969AE6897F88F10A41BA5959A" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_DE78FBE969AE6897F88F10A41BA5959A" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_1237D84BAB98FF41EFC210A41BA52BBD_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_1237D84BAB98FF41EFC210A41BA52BBD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate (as a percent)</link:label>
    <link:label id="lab_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_1237D84BAB98FF41EFC210A41BA52BBD_label_en-US" xlink:label="lab_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_1237D84BAB98FF41EFC210A41BA52BBD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_1237D84BAB98FF41EFC210A41BA52BBD" xlink:to="lab_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_1237D84BAB98FF41EFC210A41BA52BBD" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_169203A23CA163B3662E10A41BA50DF0_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_169203A23CA163B3662E10A41BA50DF0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Spread rate (as a percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_169203A23CA163B3662E10A41BA50DF0_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_169203A23CA163B3662E10A41BA50DF0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_169203A23CA163B3662E10A41BA50DF0" xlink:type="locator" />
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    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314_terseLabel_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term A loan first twelve quarters amortization percentage</link:label>
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314_label_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Periodic Amortization Percentage during First Twelve Quarters</link:label>
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314_documentation_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument Periodic Amortization Percentage during First Twelve Quarters</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters" xlink:label="loc_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314" xlink:to="lab_wp_DebtInstrumentPeriodicAmortizationPercentageduringFirstTwelveQuarters_4151D3A2A2E8CF0B423210A41BA56314" xlink:type="arc" />
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602_terseLabel_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term A loan next four quarters amortization percentage</link:label>
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602_label_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Periodic Amortization Percentage During Next Four Quarters</link:label>
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602_documentation_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument Periodic Amortization Percentage During Next Four Quarters</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters" xlink:label="loc_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602" xlink:to="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringNextFourQuarters_C36E4A3B778E44C971CE10A41BA56602" xlink:type="arc" />
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA_terseLabel_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term A Loan following three quarters amortization percentage</link:label>
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA_label_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Periodic Amortization Percentage During Following Three Quarters</link:label>
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA_documentation_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument Periodic Amortization Percentage During Following Three Quarters</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters" xlink:label="loc_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA" xlink:to="lab_wp_DebtInstrumentPeriodicAmortizationPercentageDuringFollowingThreeQuarters_D6B6B726E24BEDB94E6510A41BA586FA" xlink:type="arc" />
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentage_9D7F984E456602F808A410A41BA51D5A_terseLabel_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentage_9D7F984E456602F808A410A41BA51D5A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term B loan amortization percentage</link:label>
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentage_9D7F984E456602F808A410A41BA51D5A_label_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentage_9D7F984E456602F808A410A41BA51D5A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Periodic Amortization Percentage</link:label>
    <link:label id="lab_wp_DebtInstrumentPeriodicAmortizationPercentage_9D7F984E456602F808A410A41BA51D5A_documentation_en-US" xlink:label="lab_wp_DebtInstrumentPeriodicAmortizationPercentage_9D7F984E456602F808A410A41BA51D5A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amortization rate specified in the agreement.</link:label>
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    <link:label id="lab_us-gaap_ForeignCurrencyExchangeRateRemeasurement1_92AE005D5F9E44062B4310A41BA52189_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyExchangeRateRemeasurement1_92AE005D5F9E44062B4310A41BA52189" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Currency exchange rate</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCurrencyExchangeRateRemeasurement1" xlink:label="loc_us-gaap_ForeignCurrencyExchangeRateRemeasurement1_92AE005D5F9E44062B4310A41BA52189" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_D0BFD7C7319CFD4777D410A41BA57F51_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_D0BFD7C7319CFD4777D410A41BA57F51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Face value of debt</link:label>
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    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_6E0F7372F598F9ACCD6B17520D3A504B_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_6E0F7372F598F9ACCD6B17520D3A504B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_5F8A212FA734DFF422A817520D3AD0E5_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_5F8A212FA734DFF422A817520D3AD0E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_5F8A212FA734DFF422A817520D3AD0E5" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_5F8A212FA734DFF422A817520D3AD0E5" xlink:type="arc" />
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    <link:label id="lab_wp_AmortizationOfCustomerIncentives_2FE4A6505A69DD5443BA17520D3A9423_terseLabel_en-US" xlink:label="lab_wp_AmortizationOfCustomerIncentives_2FE4A6505A69DD5443BA17520D3A9423" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of customer incentives</link:label>
    <link:label id="lab_wp_AmortizationOfCustomerIncentives_2FE4A6505A69DD5443BA17520D3A9423_label_en-US" xlink:label="lab_wp_AmortizationOfCustomerIncentives_2FE4A6505A69DD5443BA17520D3A9423" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Customer Incentives</link:label>
    <link:label id="lab_wp_AmortizationOfCustomerIncentives_2FE4A6505A69DD5443BA17520D3A9423_documentation_en-US" xlink:label="lab_wp_AmortizationOfCustomerIncentives_2FE4A6505A69DD5443BA17520D3A9423" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount deducted from gross revenue in the current period that reflects the allocation of incentives paid to customers.</link:label>
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    <link:label id="lab_wp_AmortizationAndWriteOffOfDeferredDebtIssuanceCost_0313615772F3033A111C17520D3A0B8F_terseLabel_en-US" xlink:label="lab_wp_AmortizationAndWriteOffOfDeferredDebtIssuanceCost_0313615772F3033A111C17520D3A0B8F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization and write-off of debt issuance costs</link:label>
    <link:label id="lab_wp_AmortizationAndWriteOffOfDeferredDebtIssuanceCost_0313615772F3033A111C17520D3A0B8F_label_en-US" xlink:label="lab_wp_AmortizationAndWriteOffOfDeferredDebtIssuanceCost_0313615772F3033A111C17520D3A0B8F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization and Write Off of Deferred Debt Issuance Cost</link:label>
    <link:label id="lab_wp_AmortizationAndWriteOffOfDeferredDebtIssuanceCost_0313615772F3033A111C17520D3A0B8F_documentation_en-US" xlink:label="lab_wp_AmortizationAndWriteOffOfDeferredDebtIssuanceCost_0313615772F3033A111C17520D3A0B8F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The component of interest expense comprised of the periodic charge against earnings over the life of the financing arrangement to which such costs relate and write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.</link:label>
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    <link:label id="lab_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_CA79C700DA308FC177EA17520D3A8966_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_CA79C700DA308FC177EA17520D3A8966" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Gain on foreign currency forward</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments" xlink:label="loc_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_CA79C700DA308FC177EA17520D3A8966" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensation_25E7D87F9DA02B73387817520D49D413_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_25E7D87F9DA02B73387817520D49D413" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based compensation expense</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_25E7D87F9DA02B73387817520D49D413_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_25E7D87F9DA02B73387817520D49D413" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation</link:label>
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    <link:label id="lab_wp_TaxReceivableAgreementsNoncashIncomeExpense_CF7D0B46ABEDD0AA9C2117520D49E855_negatedTerseLabel_en-US" xlink:label="lab_wp_TaxReceivableAgreementsNoncashIncomeExpense_CF7D0B46ABEDD0AA9C2117520D49E855" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Tax receivable agreements non-cash items</link:label>
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    <link:label id="lab_wp_IncreaseDecreaseInNetSettlementAssetsAndObligations_950CAF53D8572B65A6FC17520D49D3E6_negatedLabel_en-US" xlink:label="lab_wp_IncreaseDecreaseInNetSettlementAssetsAndObligations_950CAF53D8572B65A6FC17520D49D3E6" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Net settlement assets and obligations</link:label>
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    <link:label id="lab_wp_IncreaseDecreaseInNetSettlementAssetsAndObligations_950CAF53D8572B65A6FC17520D49D3E6_documentation_en-US" xlink:label="lab_wp_IncreaseDecreaseInNetSettlementAssetsAndObligations_950CAF53D8572B65A6FC17520D49D3E6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents increase (decrease) in net settlement assets and obligations during the reporting period.</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_7D4B51DFBE2E3A59CBD017520D495178_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_7D4B51DFBE2E3A59CBD017520D495178" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Prepaid and other assets</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_7D4B51DFBE2E3A59CBD017520D495178" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_71556C69EBA06822F1A017520D492F44" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_156AEBA1A74B5010038917520D49F654_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_156AEBA1A74B5010038917520D49F654" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_156AEBA1A74B5010038917520D49F654_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_156AEBA1A74B5010038917520D49F654" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Operating Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_156AEBA1A74B5010038917520D49F654" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_156AEBA1A74B5010038917520D49F654" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_156AEBA1A74B5010038917520D49F654" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_B9966A46F468499141FB17520D496B64_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_B9966A46F468499141FB17520D496B64" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_B9966A46F468499141FB17520D496B64_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_B9966A46F468499141FB17520D496B64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_B9966A46F468499141FB17520D496B64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_B9966A46F468499141FB17520D496B64" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_B9966A46F468499141FB17520D496B64" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_152E41AF449786B60ECF17520D49942D_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_152E41AF449786B60ECF17520D49942D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investing Activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_152E41AF449786B60ECF17520D49942D_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_152E41AF449786B60ECF17520D49942D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_152E41AF449786B60ECF17520D49942D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_152E41AF449786B60ECF17520D49942D" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_152E41AF449786B60ECF17520D49942D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_561C4A0736E34ADBDE0F17520D49A9F8_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_561C4A0736E34ADBDE0F17520D49A9F8" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases of property and equipment</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_561C4A0736E34ADBDE0F17520D49A9F8_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_561C4A0736E34ADBDE0F17520D49A9F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_561C4A0736E34ADBDE0F17520D49A9F8" xlink:type="locator" />
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    <link:label id="lab_wp_PaymentsforCustomerPortfoliosandOtherIntangibleAssets_5922952B8C6B03540AC717520D498354_negatedLabel_en-US" xlink:label="lab_wp_PaymentsforCustomerPortfoliosandOtherIntangibleAssets_5922952B8C6B03540AC717520D498354" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisition of customer portfolios and related assets and other</link:label>
    <link:label id="lab_wp_PaymentsforCustomerPortfoliosandOtherIntangibleAssets_5922952B8C6B03540AC717520D498354_label_en-US" xlink:label="lab_wp_PaymentsforCustomerPortfoliosandOtherIntangibleAssets_5922952B8C6B03540AC717520D498354" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Customer Portfolios and Other Intangible Assets</link:label>
    <link:label id="lab_wp_PaymentsforCustomerPortfoliosandOtherIntangibleAssets_5922952B8C6B03540AC717520D498354_documentation_en-US" xlink:label="lab_wp_PaymentsforCustomerPortfoliosandOtherIntangibleAssets_5922952B8C6B03540AC717520D498354" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cash outflow associated with the acquisition of customer portfolios and other intangible assets during the reporting period.</link:label>
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    <link:label id="lab_us-gaap_PaymentsForHedgeInvestingActivities_99D8082BB1CE4E3FE90F17520D49A49A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForHedgeInvestingActivities_99D8082BB1CE4E3FE90F17520D49A49A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Purchase of interest rate caps</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForHedgeInvestingActivities" xlink:label="loc_us-gaap_PaymentsForHedgeInvestingActivities_99D8082BB1CE4E3FE90F17520D49A49A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProceedsFromDerivativeInstrumentInvestingActivities_30D3C2A12B5E7996A19017520D490943_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDerivativeInstrumentInvestingActivities_30D3C2A12B5E7996A19017520D490943" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from foreign currency forward</link:label>
    <link:label id="lab_us-gaap_ProceedsFromDerivativeInstrumentInvestingActivities_30D3C2A12B5E7996A19017520D490943_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDerivativeInstrumentInvestingActivities_30D3C2A12B5E7996A19017520D490943" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Derivative Instrument, Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromDerivativeInstrumentInvestingActivities" xlink:label="loc_us-gaap_ProceedsFromDerivativeInstrumentInvestingActivities_30D3C2A12B5E7996A19017520D490943" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0236EAB753BAC623788117520D496D2B_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0236EAB753BAC623788117520D496D2B" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Cash acquired (used) in acquisitions, net of cash used</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0236EAB753BAC623788117520D496D2B_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0236EAB753BAC623788117520D496D2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Net of Cash Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0236EAB753BAC623788117520D496D2B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1429F229EBF34E59841717520D491440_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1429F229EBF34E59841717520D491440" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by (used in) investing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1429F229EBF34E59841717520D491440_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1429F229EBF34E59841717520D491440" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_1429F229EBF34E59841717520D491440" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_33F82A6FA67CE383904017520D4903B9" xlink:type="locator" />
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    <link:loc xlink:href="wp-20181231.xsd#wp_RevenuefromProcessingService" xlink:label="loc_wp_RevenuefromProcessingService_4E0208B6549A98AD47500D3D8BC7F7D4" xlink:type="locator" />
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    <link:label id="lab_wp_RevenuefromProductsandServices_551B7D2ADF4442EC632F0D3D8BC796B2_documentation_en-US" xlink:label="lab_wp_RevenuefromProductsandServices_551B7D2ADF4442EC632F0D3D8BC796B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revenue from Products and Services</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_RevenuefromProductsandServices" xlink:label="loc_wp_RevenuefromProductsandServices_551B7D2ADF4442EC632F0D3D8BC796B2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueModificationOfContract_80270C4053FF378516B10D3D8BC73D46_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueModificationOfContract_80270C4053FF378516B10D3D8BC73D46" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cumulative catch-up adjustment to revenue due to ASC 606</link:label>
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    <link:label id="lab_wp_CustomerIncentives_CD45A5F25DBEDB3EDD050D4E6E9E754F_terseLabel_en-US" xlink:label="lab_wp_CustomerIncentives_CD45A5F25DBEDB3EDD050D4E6E9E754F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer Incentives</link:label>
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    <link:label id="lab_us-gaap_TitleOfIndividualAxis_65F0C1BCC306A4F54E29F6C41C572FB5_label_en-US" xlink:label="lab_us-gaap_TitleOfIndividualAxis_65F0C1BCC306A4F54E29F6C41C572FB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Title of Individual [Axis]</link:label>
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    <link:label id="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_9F0424B4DDA9D73CF97FF6C41C579569_label_en-US" xlink:label="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_9F0424B4DDA9D73CF97FF6C41C579569" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Relationship to Entity [Domain]</link:label>
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    <link:label id="lab_us-gaap_VestingAxis_0D42BE8D8E7C49FD5D34F6C41C593B58_label_en-US" xlink:label="lab_us-gaap_VestingAxis_0D42BE8D8E7C49FD5D34F6C41C593B58" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vesting [Axis]</link:label>
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    <link:label id="lab_us-gaap_VestingDomain_B4A7A2F26F5AA25DA0A9F6C41C591FB0_terseLabel_en-US" xlink:label="lab_us-gaap_VestingDomain_B4A7A2F26F5AA25DA0A9F6C41C591FB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vesting [Domain]</link:label>
    <link:label id="lab_us-gaap_VestingDomain_B4A7A2F26F5AA25DA0A9F6C41C591FB0_label_en-US" xlink:label="lab_us-gaap_VestingDomain_B4A7A2F26F5AA25DA0A9F6C41C591FB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vesting [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_B4A7A2F26F5AA25DA0A9F6C41C591FB0" xlink:type="locator" />
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    <link:label id="lab_wp_EqualAnnualInstallmentMember_7171433C6805735DBE9CF6C41C592D61_terseLabel_en-US" xlink:label="lab_wp_EqualAnnualInstallmentMember_7171433C6805735DBE9CF6C41C592D61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equal Annual Installment</link:label>
    <link:label id="lab_wp_EqualAnnualInstallmentMember_7171433C6805735DBE9CF6C41C592D61_label_en-US" xlink:label="lab_wp_EqualAnnualInstallmentMember_7171433C6805735DBE9CF6C41C592D61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equal Annual Installment [Member]</link:label>
    <link:label id="lab_wp_EqualAnnualInstallmentMember_7171433C6805735DBE9CF6C41C592D61_documentation_en-US" xlink:label="lab_wp_EqualAnnualInstallmentMember_7171433C6805735DBE9CF6C41C592D61" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equal Annual Installment</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_EqualAnnualInstallmentMember_7171433C6805735DBE9CF6C41C592D61" xlink:to="lab_wp_EqualAnnualInstallmentMember_7171433C6805735DBE9CF6C41C592D61" xlink:type="arc" />
    <link:label id="lab_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5_terseLabel_en-US" xlink:label="lab_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Time Awards</link:label>
    <link:label id="lab_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5_label_en-US" xlink:label="lab_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Time Awards [Member]</link:label>
    <link:label id="lab_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5_documentation_en-US" xlink:label="lab_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents those stock based awards that vest under a times based condition.</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_TimeAwardsMember" xlink:label="loc_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5" xlink:to="lab_wp_TimeAwardsMember_F9263136D3C09E05942AF6C41C592FC5" xlink:type="arc" />
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    <link:label id="lab_wp_PerformanceAwardsMember_CD586602B66996DDF628F6C41C5A6E51_label_en-US" xlink:label="lab_wp_PerformanceAwardsMember_CD586602B66996DDF628F6C41C5A6E51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance Awards [Member]</link:label>
    <link:label id="lab_wp_PerformanceAwardsMember_CD586602B66996DDF628F6C41C5A6E51_documentation_en-US" xlink:label="lab_wp_PerformanceAwardsMember_CD586602B66996DDF628F6C41C5A6E51" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents those stock based awards that vest under a performance based condition.</link:label>
    <link:loc xlink:href="wp-20181231.xsd#wp_PerformanceAwardsMember" xlink:label="loc_wp_PerformanceAwardsMember_CD586602B66996DDF628F6C41C5A6E51" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_wp_PerformanceAwardsMember_CD586602B66996DDF628F6C41C5A6E51" xlink:to="lab_wp_PerformanceAwardsMember_CD586602B66996DDF628F6C41C5A6E51" xlink:type="arc" />
    <link:label id="lab_wp_PaymetricRestrictedAwardsMember_A837F6B8C65270035406F6C41C5C22B6_terseLabel_en-US" xlink:label="lab_wp_PaymetricRestrictedAwardsMember_A837F6B8C65270035406F6C41C5C22B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Paymetric Restricted Awards</link:label>
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    <link:loc xlink:href="wp-20181231.xsd#wp_PaymetricRestrictedAwardsMember" xlink:label="loc_wp_PaymetricRestrictedAwardsMember_A837F6B8C65270035406F6C41C5C22B6" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DDAFF7161F9463878096F6C41C5F4952_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DDAFF7161F9463878096F6C41C5F4952" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum number of shares of Class A stock authorized under the 2012 Equity Incentive Plan</link:label>
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    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_ABEC261735AD7AD7619F25BB2A1D5067_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_ABEC261735AD7AD7619F25BB2A1D5067" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average remaining contractual term of options exercisable in years</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_1787717CD56CC8DA747525BB2A1D8938_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_1787717CD56CC8DA747525BB2A1D8938" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intrinsic value of options outstanding</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_D858DB4B03EDF6DDD9CA25BB2A1D368F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_90F1CA816C4802C1F54125BB2A1D7090_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_90F1CA816C4802C1F54125BB2A1D7090" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intrinsic value of options exercisable end of period</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_90F1CA816C4802C1F54125BB2A1D7090" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_F6A52F749DB8D6F9A0BC0D45B3D2CD54_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_F6A52F749DB8D6F9A0BC0D45B3D2CD54" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019</link:label>
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