Migration route

ADP→Workday

ADP to Workday Data Migration

Migrate workers, job data, compensation from ADP (Workforce Now / Vantage / GlobalView) to Workday HCM using a controlled process for extraction, mapping, transformation, validation, loading and reconciliation.

Discuss Your Migration All Migration Routes

Migration overview

ADP to Workday is usually part of moving from an outsourced or bureau payroll model to an integrated HCM platform, which makes it as much an operating-model change as a data migration.

Scope starts by naming the ADP product. Workforce Now, Vantage and GlobalView differ in data model and in what can be extracted, and a design built for one does not transfer to another.

Typical data scope

Scope is agreed in discovery. On this route it usually covers:

Workers

Domain in scope for a typical ADP to Workday programme.

Job data

Domain in scope for a typical ADP to Workday programme.

Compensation

Domain in scope for a typical ADP to Workday programme.

Payroll history

Domain in scope for a typical ADP to Workday programme.

Deductions

Domain in scope for a typical ADP to Workday programme.

Migration architecture

One controlled pipeline, run as repeatable cycles.

ADP→DataMove→Transformation & validation→Workday→DataVault reconciliation→DataLens

Extracting from ADP

What the source platform makes available, and the constraints that shape the extraction design.

Which ADP productWorkforce Now, Vantage HCM, GlobalView and the older payroll platforms differ in data model and in what can be extracted. Scope starts by naming the product and the modules in use.

Payroll history through reportingHistorical pay results generally come out through the reporting layer rather than as raw tables, which shapes how much history is practical to move versus archive.

Statutory and tax dataTax profiles, deductions and year-to-date balances carry compliance meaning and are treated as their own scope decision rather than folded into worker data.

Source-to-target mapping

A mapping workbook carries every field in scope from its ADP source through its transformation rule to the Workday target object and field. It is reviewed and approved with the business before the production migration, and applied identically in every cycle so a decision made once is not re-made under cutover pressure.

Transformation challenges on this route

The differences between ADP and Workday that create most of the work.

Payroll history via reporting, not tables

Historical pay results come through the reporting layer, which shapes how much history is practical to move rather than archive.

Statutory and tax data as its own scope decision

Tax profiles, deductions and year-to-date balances carry compliance meaning and are treated separately from worker data.

Year-to-date continuity at cutover

Mid-year cutovers require YTD balances to arrive exactly, because the first Workday payroll run depends on them.

Workday events, not inserts

Worker history is staged as dated events through business processes rather than loaded as rows.

Bureau-held configuration

In an outsourced model, some rules live with the provider rather than in the data. Those need documenting before they can be rebuilt in Workday.

How Workday accepts the data

Load order is part of the design, not an implementation detail.

1Foundation before workersSupervisory organisations, locations, job profiles, cost centres and compensation structures. Workday will not stage a worker into an organisation that does not exist.
2Choose EIB or Core Connector per objectEnterprise Interface Builder handles spreadsheet-shaped bulk loads against a web service; Core Connectors and Workday Studio cover the higher-volume and more complex integrations. Object volume and complexity decide which.
3Loads run as business processesThis is the difference that surprises teams coming from ERP. A Hire in Workday is a business process, not an insert. It has steps, conditions and approvals, and a load that ignores the process configuration either fails or leaves events sitting in flight.
4Staged hires and effective datingWorkers are commonly staged with a hire event and effective dates that reconstruct history, which means the load order follows the timeline as well as the dependency graph.
5Positions and supervisory hierarchyPosition management, where used, requires positions before workers; supervisory organisation assignment then rebuilds the reporting structure.
6Compensation after employmentCompensation plans and grades resolve against structures loaded earlier, so compensation is a later pass rather than a column on the worker load.
7Work the EIB error outputEach load returns per-row results. Failures are categorised against the business process or the validation that rejected them, corrected and reloaded.

Treating a Workday load like an ERP insert is the single most common cause of a failed first cycle. Events, effective dating and the business process framework decide what a load actually does.

Validation and reconciliation

Validation before load

Mandatory fields, referential integrity, format checks, business-rule validation and duplicate detection run on the prepared data, so problems surface as reportable exceptions rather than as failed loads in Workday.

Reconciliation after load

Source counts, transformed counts, rejected records and target counts, with control totals where the data supports them. Every discrepancy is categorised so the migration is approved on evidence rather than assertion.

Migration cycles

The pipeline is run end to end more than once before anything touches production. A typical structure is a first rehearsal that surfaces the bulk of mapping and data-quality corrections, a second that applies them and demonstrates production readiness, and the production cutover itself. How many cycles a programme needs depends on data quality and scope, which is established during discovery.

1Mock / PPR 1First full extract, transform, load, reconcile and exception analysis. Expect the largest correction list here.
2Mock / PPR 2Corrections applied, re-extract, re-run. Intended to closely replicate the production migration.
3Production cutoverFinal extract, data freeze, load, reconciliation, business validation and sign-off.

Common risks on this route

Cutover timed mid-quarter without YTD plan

Statutory reporting continuity depends on balances being right on day one.

Provider dependency for extracts

Extraction timelines can depend on the provider's own delivery schedule, which belongs in the plan.

Deduction mapping treated as reference data

Deductions carry statutory meaning and are validated, not crosswalked by name.

How Syntra ETL supports this route

DataMove

Extraction, mapping, transformation and load preparation for Workday.

Explore DataMove →

DataVault

Source-to-target reconciliation, migration lineage and audit evidence for every cycle.

Explore DataVault →

DataLens

Migration status, data quality and exception visibility across cycles.

Explore DataLens →

Related enterprise migration experience

We have not published a case study for this exact route. These delivered projects are the closest relevant experience.

UKG to Workday data migration

Workers, Job data, Payroll, Time and attendance

Case study available →

Related migration routes

UKG to Workday data migration

Workers, Job data, Payroll, Time and attendance

Case study available →Dayforce→Workday

Dayforce to Workday data migration

Workers, Job assignments, Pay policies, Time

View route →PeopleSoft→Workday

PeopleSoft to Workday data migration

Workers, Job data, Compensation, Absence

View route →Oracle HCM Cloud→Workday

Oracle HCM Cloud to Workday data migration

Workers, Assignments, Compensation, Absence

Planning this migration?

Tell us your source system, target platform, modules, data volumes and timeline. We can discuss the closest relevant migration experience and the recommended approach.

Discuss Your Migration See Delivered Projects