Workday certification is the entry ticket. The architecture behind it is the difference.
Eighteen payroll providers carry some form of Workday GPC certification. Very few actually operate the integration themselves. Mercans does. We own the in-country entities. We built the platform. We wrote the connector. We run the operations. That's the shortlist worth comparing.
Most certified GPC partners run on an aggregator model
Behind most "global" payroll providers is a network of local subcontractors and middlemen. They subcontract the actual payroll to local vendors in each country, then stitch the results together.
Central platform · in-country subcontractors
Local payroll calculation is performed by a third-party in-country provider - the customer signs with one company, the calculation runs at another.
SLAs degrade through the chain. The aggregator's SLA is not the in-country provider's SLA.
Data flows through the aggregator's stack and the subcontractor's stack - two operational perimeters, two incident-response runbooks.
Switching a country provider means re-onboarding the country, re-mapping the payroll, re-validating the integration - at the customer's cost.
Compliance is "we contractually require our subcontractors to" - not "we are the subcontractor and we are audited."
Pricing model often layers margin on top of the in-country provider's price - visible at renewal, not at sale.
Owned entities · proprietary platform
Mercans operates owned legal entities in 100+ countries. The contract you sign and the calculation that runs are the same company.
One SLA, end-to-end. No subcontractor handoff to absorb the variance.
One operational perimeter. The data does not leave the Mercans estate to be calculated.
Adding a country is adding capacity, not onboarding a new vendor.
Compliance is direct: SOC 2 Type II, ISO 27701, EU Binding Corporate Rules - Mercans-audited, not contractually delegated.
Direct pricing. The economics are visible because there is no third party in the calculation chain.
The choices Mercans made deliberately. Each one is verifiable.
None of these are slogans. Each one is a check the buyer can run - through the analyst report, the SOC 2 letter, the BCR registration, the platform demo, the onboarding contract.
Owned entities in 100+ countries
Most "global" payroll providers are aggregators of local providers. Mercans operates its own legal entity in every country where it offers payroll or EOR services. The customer signs with the entity that runs the payroll - there is no subcontracting layer to dilute the SLA, the compliance posture, or the data path.
How to verify
Entity registry · Country-by-Country MSA · In-country tax registrations on request.
HRBlizz is proprietary, built in-house
HRBlizz is Mercans' own platform - built, owned, and operated by Mercans. It is not white-labelled software, not a customised third-party HCM, not an iPaaS layer over someone else's payroll engine. The Workday integration is built directly into the platform Mercans engineers, which is why the integration roadmap moves at Mercans' velocity, not a vendor's.
How to verify
Engineering team interview · Platform architecture session · Release-cadence record.
All five GPC features certified - every one in production
Workday's Global Payroll Connect framework defines five features. Mercans is certified across all five - DCoD, APD, GPH, ExPR, and ExPD - and each one runs in production for paying customers today. Many "certified" partners qualify on a partial set; the difference is what the buyer's payroll team has to manually fill in afterwards.
How to verify
Workday GPC partner directory listing · Live customer reference call · GPC Features deep dive.
The compliance posture few payroll providers carry
ISO 27001, ISO 27017, ISO 27018, ISO 27701 (Privacy Information Management - rare among payroll providers), ISO 9001, SOC 1 Type II and SOC 2 Type II audited by KPMG, and approved EU Binding Corporate Rules. The combination is unusual; the BCR and ISO 27701 in particular separate Mercans from the field.
How to verify
SOC 2 Type II report under NDA · ISO certificates on request · BCR documentation.
Sovereign Tier IV infrastructure with DR mirroring
Worker data is processed in Tier IV data centres in Tallinn (EU primary) and Dubai (META primary), with disaster recovery mirroring across geographies. EU/EEA workloads are GDPR-native by location of processing; META workloads sit in a sovereign region. Customer-elected residency is enforced at the platform layer, not negotiated.
How to verify
Data centre certifications · Residency policy document · DR drill report.
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.
