End-to-end kronos workforce central decommissioning: target migration to Fusion, historical archive to cloud, infrastructure retirement, knowledge transfer, subscription cancellation. Hit the Dec 2025 / Mar 2027 EOL deadline cleanly with $1M–$3M annual savings sustained.
EOL is not negotiable. The question is how to time decommissioning so you hit the deadline cleanly with target migration, archive and infrastructure retirement all complete — and the savings realized.
UKG has been clear about Kronos Workforce Central end-of-life: Kronos Private Cloud December 2025, on-prem WFC March 2027. After those dates there is no further product roadmap, no FLSA-relevant patches, no security CVE updates, no compliance updates for changing state wage laws. Customers staying on WFC past EOL run a system that doesn't track new California PAGA rules, doesn't reflect updated FMLA regulations, and doesn't get patched against newly-disclosed CVEs.
The kronos workforce central decommissioning project is the response. Five workstreams in parallel: target migration (Time + Scheduling + Absence to Fusion HCM, or UKG Pro WFM, or Workday WFM), historical archive (multi-year evidence to cloud archive), infrastructure retirement (servers + integration middleware + time-clock devices), knowledge transfer (Kronos admin and pay-rule SME roles), and subscription cancellation (UKG contract termination effective at or before EOL).
The savings case is straightforward. Subscription licensing eliminated (commonly $1.5M–$3M/year for a 10,000-EE deployment). Infrastructure retired (commonly $200K–$500K/year). Specialist headcount redirected ($300K–$800K/year). Offsetting Fusion subscription and cloud archive operational cost. Net sustained savings commonly $1M–$3M annually with payback inside 18 months. The kronos workforce central decommissioning project sells itself once the EOL clock is visible on the wall.
And how the Syntra ETL framework addresses each one — before they push you past the EOL deadline.
Dec 2025 and Mar 2027 are hard dates. Reverse-engineer project plan from EOL. 4–6 week buffer for cutover edge cases. Start Q2 of year before EOL or earlier.
Contract-mandated notification 60–90 days ahead of cutover. European works councils trigger consultation periods. Built into project plan timing.
Hundreds of WFC pay rules (FLSA OT, shift diff, holiday premium, union contracts) need to land in Fusion Time Categories without a payroll miscalculation at cutover.
$5M+ accrual liability common. Reconcile WFC liability to Fusion liability to the hundredth-of-an-hour. SOX accrual sign-off required at cutover moment.
Active FMLA / ADA / state PFL cases mid-leave cannot restart 12-week clock. Case state preserved through cutover with full intermittent-fragment context.
Hundreds to thousands of Kronos time clocks across sites. Replace or reflash, network re-point, asset disposal. Per-site cutover scheduling required.
Reverse-engineered from the customer's specific EOL date. Five workstreams running in parallel to hit the deadline cleanly.
Catalog WFC footprint: tenants, pay groups, integrations, time-clock devices, pay rules, FMLA cases, accrual liability. Target system decision (Fusion HCM / UKG Pro WFM / Workday WFM). Project plan reverse-engineered from EOL date with parallel workstreams.
Fusion HCM (or alternative) Time + Scheduling + Absence configured. Pay rule crosswalks, labor account translation, absence plan setup, schedule template translation. Discovery-classification-rebuild for WFC pay rules and reports.
Cloud archive deployed in parallel: Parquet on object storage, SQL query layer, web UI, pre-built templates. Historical data extraction in progress. Retention policies per data domain per jurisdiction configured.
1–2 pay cycles in parallel: WFC + Fusion both processing punches. Reconciliation per pay group per period. Accrual liability snapshots compared to the hundredth-of-an-hour. Union/works council notice issued.
Production cut to Fusion. WFC tenant moved to read-only. Time clocks replaced/reflashed per site. Last delta archived. Archive validated as sole source for historical lookups. SOX accrual sign-off.
WFC app/db servers retired. Integration middleware retired. Time clocks disposed. UKG subscription cancellation submitted effective at or before EOL date. Knowledge transfer complete. Annual savings realized.
Three cost categories eliminated, two offsetting costs added. Net sustained savings typically $1M–$3M annually.
WFC per-EE per-month licensing eliminated. Mid-to-large deployment (10,000+ EE) commonly $1.5M–$3M/year. Largest line item in the savings model.
On-prem WFC database, app servers, integration middleware retired. Commonly $200K–$500K/year in infra + ops + facilities. Cloud archive replaces at fraction of cost.
Kronos admin, pay rule SME, integration specialist roles redirected or eliminated. Commonly $300K–$800K/year in salary + benefits + overhead.
Fusion HCM Time & Labor + Absence subscription added. Typically lower per-EE-per-month than WFC at equivalent scale, plus delivers consolidated HR + payroll + WFM platform.
Object storage + SQL query layer + Syntra platform subscription. Commonly $50K–$200K/year for typical deployment — 1/15th to 1/30th of WFC subscription it replaces.
Net sustained annual savings $1M–$3M for mid-to-large deployments. Decommissioning project cost typically recovered inside 18 months post WFC cancellation.
Kronos workforce central decommissioning is the end-to-end process of retiring a live Kronos WFC tenant — cancelling the UKG subscription, retiring the Kronos infrastructure (database servers, app servers, integration middleware, time-clock devices), transferring institutional knowledge out of the Kronos administrators' heads, and ensuring the historical data archive is fully live and tested before the WFC tenant goes dark. With Kronos Private Cloud EOL December 2025 and on-prem WFC EOL March 2027, decommissioning is now a deadline-driven project for every customer running WFC, not an open-ended exit. Syntra ETL handles the data archive component of the decommissioning so the WFC subscription cancellation can proceed without losing audit evidence.
Renewal is not an option past the EOL dates. UKG has been clear that Kronos Private Cloud will be EOL December 2025 and on-prem WFC will be EOL March 2027 — no further roadmap, no compliance updates for changing state wage laws, no FLSA-relevant patches, no security updates. Customers staying on WFC past EOL run a system that won't track new state premium-pay rules, won't reflect updated FMLA regulations, and won't receive security CVE patches. The kronos workforce central decommissioning conversation is no longer 'should we?' — it is 'how do we time it so we hit the EOL deadline cleanly.'
Five workstreams: (1) target migration — Time, Scheduling, Absence to Fusion HCM (or UKG Pro WFM, or Workday WFM depending on customer strategic direction); (2) historical archive — multi-year punches, timecards, FMLA cases, accrual liability moved to cloud archive with SQL query layer; (3) infrastructure retirement — WFC application servers, database servers, integration middleware, time-clock devices decommissioned and disposed per asset-management policy; (4) knowledge transfer — Kronos administrators, pay rule SMEs, integration specialists transitioned; (5) subscription cancellation — UKG contract terminated effective at or before the EOL date.
A typical full decommissioning project (target migration + archive + infra retirement + knowledge transfer + subscription cancellation) runs 9–14 months. The critical path is usually the target migration — 10–14 weeks for the kronos workforce central to Fusion migration itself, with parallel-run discipline. The archive go-live runs in parallel at 6–9 weeks. Infrastructure retirement and knowledge transfer run 4–8 weeks of close-out work after target system is stable. For customers facing the December 2025 Kronos Private Cloud EOL, start no later than Q2 of the year before EOL — earlier is safer.
Three savings categories. Subscription: WFC per-EE per-month licensing eliminated — for a 10,000-EE deployment commonly $1.5M–$3M/year. Infrastructure: on-prem WFC database, app servers, integration middleware retired — commonly $200K–$500K/year in infra + ops. Skills: dwindling Kronos admin skills no longer needed — $300K–$800K/year in roles that can be redirected or eliminated. Offsetting costs: Fusion subscription, cloud archive storage and operation. Net annual savings for a mid-to-large deployment is commonly $1M–$3M sustained, with the decommissioning project paying back inside 18 months.
Yes — that is exactly what the historical archive is for. The kronos workforce central cloud archive (deployed in parallel with the decommissioning project) holds every historical punch, signed timecard, accrual balance and FMLA case from the WFC tenant. Post-decommissioning, DOL Wage & Hour investigators asking for 2021 timecards get the same evidence pack they would have received from the live WFC tenant — hash-signed, chain-of-custody intact, sub-30-second query response. The archive survives WFC EOL indefinitely. No FLSA audit response capability is lost in decommissioning.
Kronos time clocks (Series 4500 / InTouch / InTouch DX) need to be either (a) replaced with Fusion-compatible biometric or PIN-based clocks tied to the new system, or (b) reflashed/reprovisioned if the manufacturer is still supporting them. The decommissioning project includes a device inventory (typically hundreds to thousands of clocks across multi-site deployments), per-site cutover scheduling, network re-pointing to Fusion endpoints, asset disposal per IT asset management policy. For union sites, clock replacement often requires bargaining notice — built into the project plan.
Union contracts and European works councils typically require formal notice before retiring a system that changes how members punch in, see schedules, or request leave. The decommissioning project plan includes a notification milestone, typically 60–90 days ahead of the cutover, with materials covering: target system overview (Fusion screens, mobile app), no-loss-of-data assurance (archive availability), parallel run windows, training schedule, and grievance process for transition issues. For European works councils, the notification triggers a consultation period that must complete before cutover — built into project timing.
Book a 30-minute discovery call. We'll review your WFC footprint, target system direction, EOL deadline pressure and savings target — and confirm a concrete decommissioning project plan reverse-engineered from the EOL date.