generated: '2026-09-14'
method: searched
source: https://developers.adp.com/apis/api-explorer (the API Explorer catalogue behind developers.adp.com publishes
  a semver version and a last-modified timestamp for every API document)
scheme: per-API semantic version, plus a major version carried in the URI path (/hr/v2/workers)
note: ADP publishes no single dated product changelog for the API platform. What it does publish, per API, is a semantic
  version string and a last-modified date on each API Explorer entry, plus dated "What's New" blocks inside individual
  guides (the Event API guide records "October 2025 - Added support for webhooks"). The entries below are the real per-API
  version/date pairs for ADP Workforce Now, newest first.
narrative_entries:
- date: 2025-10
  area: Event notifications
  change: Added support for webhooks as an alternative to message-queue polling.
  source: https://developers.adp.com/getting-started/key-concepts/adp-event-apis-and-event-notification-guide
- date: 2020-07
  area: Getting started
  change: 'Postman quick-start guide refreshed: endpoint information, certificate steps and screenshots.'
  source: https://developers.adp.com/getting-started/key-concepts/make-your-first-api-call-using-postman-1
api_versions:
- api: Applicant Onboarding
  resource_path: hcm/applicant-onboarding/v2/applicant-onboarding
  version: 2.0.1
  last_modified: '2026-09-11'
- api: Worker Profile Experience (WFN)
  resource_path: hr/hr-worker-profiles/v1/hr-worker-profiles
  version: 1.0.3
  last_modified: '2026-08-14'
- api: US Tax Profiles
  resource_path: payroll/us-tax-profiles/v2/us-tax-profiles
  version: 2.0.2
  last_modified: '2026-08-05'
- api: Workers - Work Assignment Management
  resource_path: hr/workers-work-assignment-management/v2/workers-work-assignment-management
  version: 2.0.14
  last_modified: '2026-07-31'
- api: Pay Data Input
  resource_path: payroll/pay-data-input/v1/pay-data-input
  version: 1.0.0
  last_modified: '2026-07-17'
- api: Tax Policy Eligibility Solutions (PI)
  resource_path: payroll/tax-policy-eligibility-solutions/v1/tax-policy-eligibility-solutions
  version: 1.0.1
  last_modified: '2026-07-14'
- api: Payroll Outputs
  resource_path: payroll/payroll-outputs/v2/payroll-outputs
  version: 2.0.3
  last_modified: '2026-06-26'
- api: Time Card Inputs
  resource_path: time/time-card-inputs/v1/time-card-inputs
  version: 1.0.2
  last_modified: '2026-06-25'
- api: US Tax Profiles
  resource_path: payroll/us-tax-profiles/v1/us-tax-profiles
  version: 1.0.5
  last_modified: '2026-05-13'
- api: Job Applications
  resource_path: staffing/job-applications/v2/job-applications
  version: 2.0.9
  last_modified: '2026-05-08'
- api: Job Applicants
  resource_path: staffing/job-applicants/v2/job-applicants
  version: 2.0.8
  last_modified: '2026-05-08'
- api: Time Cards
  resource_path: time/time-cards/v2/time-cards
  version: 2.0.4
  last_modified: '2026-05-06'
- api: Payroll Group List of Pay Periods
  resource_path: payroll/payroll-group-pay-periods/v1/payroll-group-pay-periods
  version: 1.0.0
  last_modified: '2026-05-04'
- api: Work Schedule Import Management
  resource_path: time/work-schedule-entry-uploads/v2/work-schedule-entry-uploads
  version: 2.0.0
  last_modified: '2026-04-25'
- api: Personal Contacts
  resource_path: hr/personal-contacts/v2/personal-contacts
  version: 2.0.1
  last_modified: '2026-04-24'
- api: Associate Certifications
  resource_path: talent/associate-certifications/v2/associate-certifications
  version: 2.0.2
  last_modified: '2026-04-19'
- api: Associate Recognitions
  resource_path: talent/associate-recognitions/v2/associate-recognitions
  version: 2.0.0
  last_modified: '2026-04-19'
- api: Associate Competencies
  resource_path: talent/associate-competencies/v2/associate-competencies
  version: 2.0.1
  last_modified: '2026-04-19'
- api: Associate Licenses
  resource_path: talent/associate-licenses/v2/associate-licenses
  version: 2.0.1
  last_modified: '2026-04-19'
- api: Time Off Requests
  resource_path: time/time-off-requests/v3/time-off-requests
  version: 3.0.9
  last_modified: '2026-04-06'
- api: Deduction Configuration Management
  resource_path: payroll/deduction-configurations/v3/deduction-configurations
  version: 3.0.1
  last_modified: '2026-04-03'
- api: Benefit Dependents
  resource_path: benefits/dependents/v1/dependents
  version: 1.0.4
  last_modified: '2026-04-03'
- api: Time Off Management
  resource_path: time/time-off-requests/v2/time-off-requests
  version: 2.0.0
  last_modified: '2026-03-11'
- api: Workers - Lifecycle Management
  resource_path: hr/workers-lifecycle-management/v2/workers-lifecycle-management
  version: 2.0.14
  last_modified: '2026-02-12'
- api: General Ledger Document Management
  resource_path: payroll/general-ledger-documents/v1/general-ledger-documents
  version: 1.0.3
  last_modified: '2025-08-20'
- api: Team Time Cards
  resource_path: time/team-time-cards/v2/team-time-cards
  version: 2.0.5
  last_modified: '2025-08-12'
- api: Data Collection Entries
  resource_path: time/data-collection-entries/v1/data-collection-entries
  version: 1.0.3
  last_modified: '2025-07-01'
- api: Work Assignment Management
  resource_path: hr/hr-work-assignment-management/v3/hr-work-assignment-management
  version: 3.0.1
  last_modified: '2025-06-27'
- api: Pay Statements
  resource_path: payroll/pay-statements/v1/pay-statements
  version: 1.0.27
  last_modified: '2025-05-27'
- api: Associate Educational Degrees
  resource_path: talent/associate-educational-degrees/v2/associate-educational-degrees
  version: 2.0.3
  last_modified: '2025-05-06'
- api: Associate Memberships
  resource_path: talent/associate-memberships/v2/associate-memberships
  version: 2.0.1
  last_modified: '2025-05-06'
- api: Worker Leaves
  resource_path: hr/worker-leaves/v2/worker-leaves
  version: 2.0.3
  last_modified: '2025-04-23'
- api: WFN Custom Codelists
  resource_path: hcm/wfn-codelists/v3/wfn-codelists
  version: 3.0.0
  last_modified: '2025-04-22'
- api: Labor Charge Codes Upload Management
  resource_path: time/labor-allocation-code-uploads/v2/labor-allocation-code-uploads
  version: 2.0.0
  last_modified: '2025-03-31'
- api: Workers
  resource_path: hr/workers/v2/workers
  version: 2.0.16
  last_modified: '2025-02-05'
- api: Worker Pay Distributions
  resource_path: payroll/pay-distributions/v2/pay-distributions
  version: 2.0.8
  last_modified: '2024-11-22'
- api: Client Data - Validation Tables
  resource_path: hcm/validation-tables/v1/validation-tables
  version: 1.0.0
  last_modified: '2024-09-30'
- api: Workers - Demographic Data Management
  resource_path: hr/workers-demographic-data-management/v2/workers-demographic-data-management
  version: 2.0.7
  last_modified: '2024-09-26'
- api: Workers - Custom Data Management
  resource_path: hr/workers-custom-data-management/v2/workers-custom-data-management
  version: 2.0.3
  last_modified: '2024-06-21'
- api: Workers - Compensation Management
  resource_path: hr/workers-compensation-management/v2/workers-compensation-management
  version: 2.0.6
  last_modified: '2024-05-03'
- api: Time Off Balances
  resource_path: time/time-off-balances/v3/time-off-balances
  version: 3.0.1
  last_modified: '2024-04-26'
- api: Work Schedules
  resource_path: time/work-schedules/v1/work-schedules
  version: 1.0.5
  last_modified: '2024-04-17'
- api: Workers - Data Integration Management
  resource_path: hr/workers-data-integration-management/v2/workers-data-integration-management
  version: 2.0.15
  last_modified: '2024-03-22'
- api: Worker Demographics
  resource_path: hr/worker-demographics/v2/worker-demographics
  version: 2.0.6
  last_modified: '2024-03-22'
- api: Job Requisitions
  resource_path: staffing/job-requisitions/v1/job-requisitions
  version: 1.0.7
  last_modified: '2024-03-22'
- api: Worker Associate Profile - Personal & Work Info
  resource_path: hr/worker-associate-profiles/v2/worker-associate-profiles
  version: 2.0.0
  last_modified: '2024-03-22'
- api: Worker Payroll Instructions
  resource_path: payroll/worker-payroll-instructions/v1/worker-payroll-instructions
  version: 1.0.4
  last_modified: '2024-03-22'
- api: Workers - Personal Communication Management
  resource_path: hr/workers-personal-communication-management/v2/workers-personal-communication-management
  version: 2.0.0
  last_modified: '2024-03-22'
- api: Corporate Directory
  resource_path: hr/corporate-directory/v1/corporate-directory
  version: 1.0.0
  last_modified: '2024-03-22'
- api: Workers - Business Communication Management
  resource_path: hr/workers-business-communication-management/v2/workers-business-communication-management
  version: 2.0.0
  last_modified: '2024-03-22'
- api: Beneficiaries
  resource_path: benefits/beneficiaries/v1/beneficiaries
  version: 1.0.1
  last_modified: '2024-03-22'
- api: Workers - Work Deployment Management
  resource_path: hr/workers-work-deployment-management/v2/workers-work-deployment-management
  version: 2.0.0
  last_modified: '2024-03-22'
- api: Workers - Identification Management
  resource_path: hr/workers-identification-management/v2/workers-identification-management
  version: 2.0.1
  last_modified: '2024-03-22'
- api: Workers - Biological Data Management
  resource_path: hr/workers-biological-data-management/v2/workers-biological-data-management
  version: 2.0.2
  last_modified: '2024-03-22'
- api: Workers - Person Custom Data Management
  resource_path: hr/workers-person-custom-data-management/v2/workers-person-custom-data-management
  version: 2.0.0
  last_modified: '2024-03-22'
- api: External Benefit Plans
  resource_path: benefits/external-plans/v1/external-plans
  version: 1.0.0
  last_modified: '2024-03-22'
- api: Associate Languages
  resource_path: talent/associate-languages/v2/associate-languages
  version: 2.0.0
  last_modified: '2024-03-22'
- api: Recruiting Questionnaires (WFN & ADPRM)
  resource_path: staffing/recruiting-questionnaires/v3/recruiting-questionnaires
  version: 3.0.1
  last_modified: '2024-03-22'
- api: Workers - KSAOC Management
  resource_path: hr/workers-ksaoc-management/v2/workers-ksaoc-management
  version: 2.0.0
  last_modified: '2024-03-22'