Payroll remediation is the process of finding underpaid entitlements, fixing the cause, then calculating and paying what each current and former employee is owed, with interest. In Australia, the Fair Work Ombudsman’s Payroll Remediation Program guide, published in May 2025, sets out what a good program looks like. The short version: agree the rules before you calculate anything, and document every decision as though the Ombudsman will read it.
What is payroll remediation?
A remediation program corrects historical underpayments of wages, penalty rates, allowances, leave, super or other entitlements. It covers everyone affected, including people who have since left.
It is different from a one-off pay correction. A remediation is a structured project with a scope, a documented method, a calculation engine, a payment process and a close-out. Large programs often run across several awards and enterprise agreements, multiple states and six or more years of data.
When do you need a remediation program?
Most programs start with one of these triggers:
- An internal audit or compliance review finds a gap.
- An employee, union or the Fair Work Ombudsman raises a complaint.
- A new enterprise agreement or award variation is applied late or incorrectly.
- A payroll or rostering system change exposes rules that were configured wrongly years ago.
- Annualised salaries fail their annual reconciliation against award entitlements.
If the issue is small, recent and affects a handful of people, a straightforward correction may be enough. The FWO’s guide is aimed at larger, more complex cases: multiple instruments, many employees or a significant total owed.
What does the Fair Work Ombudsman expect?
The FWO says it looks at what an employer has done to fix underpayments when deciding whether to take action under its Compliance and Enforcement Policy. The guide’s key expectations are:
- A documented methodology for calculating historical entitlements, based on the records you have.
- Interest on back payments. It isn’t a legal requirement, but the FWO expects it as good practice. Simple interest is enough, and the Federal Court’s pre-judgment rate (the RBA cash rate plus 4%) is an accepted approach.
- Former employees found and paid. Employers are expected to take all reasonable steps to locate them, using more than one contact method.
- Clear communication with affected employees, and engagement with unions or consultative committees.
- A justified lookback period. If you limit the program to the six-year limitation period, the FWO may ask you to explain why.
- Prompt fixes so underpayments don’t continue while the program runs.
How far back should you look?
Most programs look back six years, which matches the limitation period for underpayment claims under the Fair Work Act. The real answer depends on how long the issue has existed, what records survive, and whether a shorter period can be defended.
Decide the lookback early and write down why. Changing it halfway through means recalculating everything.
The six stages of a remediation program
- Scope. Confirm the affected population, period, instruments and systems. Assess data quality before anyone quotes a fee or a timeline.
- Fix forward. Stop the underpayment before calculating what’s owed. That means correcting the configuration, training the people who roster, approve and process pay, and putting exception reporting in place. It also fixes the end date of the remediation period, so the numbers don’t go stale while you calculate.
- Method. Document every interpretation call, assumption and business rule, then have it signed off by you and your advisers. Nothing is calculated until this is agreed.
- Build and test. Rebuild each person’s entitlements against the agreed method, inside your environment. Test against cases your team already knows the answer to.
- Pay and communicate. Calculate interest and super, verify identities, trace former employees and run the payments.
- Close out. Confirm through exception reporting that the fix is holding, deal with unclaimed amounts, and hand over the workings so your team can defend them later.
The method stage is where most programs go wrong. Without a written business rule, every calculation is an argument waiting to happen, usually eighteen months later.
Paying it out: the part everyone underestimates
Calculating what’s owed is one project. Paying it is another. The rollout usually needs:
- Identity verification before money moves, especially for former employees contacted by email or phone.
- Tracing former employees through last known details, super funds and repeated contact attempts.
- A contact centre or dedicated inbox with scripted answers, so employees get consistent explanations.
- Correct tax treatment. Back pay that accrued more than 12 months before payment is reported as Lump sum E. Since 1 July 2025 the old $1,200 threshold no longer applies, so every qualifying amount is reported this way.
- Super on the back pay. From 1 July 2026, super guarantee is calculated on qualifying earnings, and late amounts attract the super guarantee charge.
- A plan for people you can’t reach, including deceased estates and amounts that remain unclaimed.
What’s at stake if you get it wrong?
Since 1 January 2025, intentionally underpaying employees has been a criminal offence under the Fair Work Act. Individuals face up to ten years’ imprisonment, and companies face fines in the millions. Genuine mistakes are not caught by the offence, and employers can self-report through a cooperation agreement with the FWO.
A well-run remediation is the clearest evidence that an underpayment was a mistake and not a choice.
What drives the time and cost?
| Factor | Why it matters |
|---|---|
| Number of instruments | Each award or agreement needs its own rules, tests and sign-off |
| Lookback period | More years means more data, more rate changes and more former employees |
| Data quality | Missing timesheets or rosters force assumptions, which need to be documented and defended |
| Former employees | Tracing and verifying people is slow, manual work |
| Systems | Older or replaced systems make extraction and reconciliation harder |
Common mistakes
- Calculating before the rules are agreed, then redoing the work.
- Leaving former employees out of scope, or making one contact attempt and stopping.
- Forgetting interest, super or the correct tax treatment.
- Recalculating before the forward fix is in place, so the underpayment keeps growing while you calculate.
- Extracting payroll data into uncontrolled spreadsheets that nobody can audit later.
Frequently asked questions
Do we have to pay interest on back pay?
Not by law, unless a court orders it. The FWO expects it as good practice and considers it when deciding on enforcement.
Do we have to report an underpayment to the FWO?
There is no general obligation to self-report. The FWO’s guide explains what to expect if you do, and self-reporting can support a cooperation agreement.
How long does a remediation take?
It depends on the number of instruments, the lookback period, data quality, former employees and systems. Small, clean programs can finish in weeks. Complex multi-agreement programs often run for many months.
Do we have to pay former employees?
Yes. The FWO expects all reasonable steps to find and pay them.
Can we do this in-house?
Often, if you have capacity and the right calculation skills. Specialist help is most useful for the method, the calculation build and the payment rollout.
This article is general information, not legal advice.