Workday ⇄ HRBlizz · Full stack

The integration is event-driven, REST-native, and operated by the team that built it.

A certification proves the integration works. The architecture proves it scales. Below is the system Mercans runs in production for every Workday customer.

Integration scope

What our connector talks to inside Workday.

The complete scope of integration - what we connect to, in which direction, and under which protocol.

Workday interface	Direction	Protocol	Mercans usage	Status
PECI Payroll Effective Change Interface	Workday → HRBlizz	File · scheduled	Bulk batch ingestion of HCM deltas; primary path for regulated batch use cases.	✓ Certified
DCoD Data Changes on Demand	Workday → HRBlizz	REST · event-driven	Real-time delta sync. Event-scoped. The default sync mode for operational responsiveness.	✓ Certified
APD Additional Payroll Data	Workday → HRBlizz	File · scheduled	Country-specific payroll fields captured natively in Workday and forwarded with the worker payload.	✓ Certified
GPH Global Payroll Hub	Workday → HRBlizz	REST · state push	Cycle status, exception flags, completion percentage. Surfaced in Workday administrator view.	✓ Certified
ExPR External Payroll Results	Workday → HRBlizz	REST · structured JSON	Calculated payroll results returned line-by-line to Workday for reconciliation, finance reporting, and audit.	✓ Certified
ExPD External Payroll Documents	Workday → HRBlizz	REST · binary upload	Payslips, tax forms, statutory documents pushed to the Workday document repository.	✓ Certified
Workday Public REST API	Bidirectional	REST · OAuth 2.0	Worker, position, compensation reads outside the GPC framework where customer use cases require it.	Live
Workday Public REST API	Workday → HRBlizz	REST	Bulk document delivery and re-upload for payslip corrections.	Live

Three ways to run it. Use whichever each country needs.

Pick the mode that fits each country's reality. Change your mind later. Same connector, same tenant, no migration.

Mode A · Event-driven

REST + DCoD, real-time sync

For high-velocity HR organisations and pay groups where sub-day responsiveness matters. Worker changes propagate to the payroll engine inside seconds; GPH reflects state continuously.

Best for · Tech, pharma, finance

Mode B · Scheduled batch

PECI, daily or pay-cycle aligned

For organisations whose internal controls require fixed sync windows - common in regulated industries. Same connector, same engine, same outputs. Different rhythm.

Best for · Banking, defence, energy

Mode C · Hybrid

Event-driven for some, batch for others

A single Workday tenant connected to HRBlizz with mode A for most countries and mode B for jurisdictions where local IT or labour-council policy requires batch. Configured per country in the policy plane.

Best for · Most enterprises in practice

Ready for a technical walkthrough with our Workday integration architects?

Bring your Workday tenant configuration, country footprint, and a list of pain points — we'll bring the architecture diagram, the certification evidence, and a deployment timeline.

Request a session ›