Employee Accidental Overpayment Salary: Employer Rights, Repayment Rules And Time Limits
An employee accidental overpayment salary situation occurs when a payroll error results in a worker receiving more money than their contract entitles them to, and UK law under the Employment Rights Act 1996 gives employers the right to recover it. These figures and rules reflect UK employment law as it stood in July 2026.
Key takeaways
- Under section 14 of the Employment Rights Act 1996, an employer can deduct a genuine accidental overpayment from an employee’s wages without needing prior written consent.
- Court action to recover an overpayment as a civil debt must generally begin within six years, under section 5 of the Limitation Act 1980.
- Acas guidance recommends agreeing a repayment plan rather than deducting the full amount from a single payslip.
What Counts as an Employee Accidental Overpayment Salary Error?
An employee accidental overpayment salary error happens whenever payroll pays a worker more than their contract or statutory entitlement allows, with no deliberate decision behind it. The most common causes are:
- Data entry mistakes: The wrong figure entered against an employee’s record
- Duplicated overtime or shift hours: Hours logged twice across systems
- Incorrect pay grade: A new starter or promoted employee left on the wrong band
- Miscalculated final salary: Pay continuing after an employee’s actual leaving date
- Holiday, sick pay, or bonus errors: Entitlement calculated on outdated records
- Pension contribution mismatches: Deductions miscalculated under a salary sacrifice pension arrangement can throw off net pay in either direction
Whatever the cause, the legal position stays the same. The Employment Rights Act 1996 treats a genuine payroll error as one of the few situations where a deduction does not need the employee’s prior written agreement, though Acas and the Department for Business and Trade both recommend notifying staff promptly regardless.
Can an Employer Legally Reclaim an Overpayment of Wages?
For an accidental overpayment, an employer can generally take money from an employee’s wages without needing their permission first.
Section 14 of the Employment Rights Act 1996 creates a specific exception to the usual protection against unlawful deduction from wages. A deduction is lawful where:
- The overpayment resulted from a genuine payroll error, not a disputed pay rate
- The employer notifies the worker of the amount and the reason for it
- The deduction does not reduce pay below the National Minimum Wage for reasons unrelated to the overpayment
- No formal dispute about the overpayment remains unresolved
When recovery becomes unreasonable
A lawful deduction can still damage the working relationship if it is handled badly. Taking the full amount from one payslip without warning, or ignoring an employee’s financial hardship, can damage trust even where the underlying right to recover the money isn’t in question.
Employer and Employee Rights at a Glance
Based on Acas guidance and the Employment Rights Act 1996, here is what each side can expect during an overpayment dispute.
| Situation | Employer’s position | Employee’s position |
|---|---|---|
| Overpayment found while still employed | Can deduct from future wages under section 14 ERA 1996 | Can request a written breakdown and negotiate terms |
| Deduction disputed by employee | Should pause deductions until resolved | Can raise a grievance or contact Acas |
| Overpayment found after employee has left | Can request repayment or pursue a County Court claim | Can dispute the amount or agree a repayment plan |
| Deduction would dip below National Minimum Wage | Deduction still permitted for genuine overpayment recovery | Cannot use NMW rules to block repayment |
What Should You Do Right After Discovering an Overpayment?
If you spot an accidental overpayment of wages on your payslip, act quickly rather than waiting for payroll to notice first:
- Check your payslip against your contract and any recent changes to hours, overtime, or bonuses.
- Notify your employer or payroll team in writing, even if you’re unsure of the exact amount.
- Ask for a full written breakdown before agreeing to any deduction, including dates and how the error occurred.
- Discuss a repayment plan that fits your finances rather than accepting one large deduction.
- Keep a written record of every conversation and agreement.
Acting promptly works in your favour if a dispute develops, as early written communication counts as evidence of good faith.
How Long Does an Employer Have to Recover an Overpayment?
There is no time limit on deducting an accidental overpayment directly from a current employee’s wages, but recovering the same money through the courts is subject to a strict six year limit.
Widely circulated claim: several employer guides state either that there is no time limit at all, or that a flat six year limit applies to every method of recovery.
Correct position: the deduction right under section 14 ERA 1996 has no fixed expiry and can be used against current wages regardless of when the overpayment occurred. Once an employer needs to sue for the money, typically because the employee has left, section 5 of the Limitation Act 1980 imposes a six year limit from the date of the overpayment.
Source: Limitation Act 1980, section 5; Employment Rights Act 1996, section 14.
For example, an employee overpaid £1,200 in 2019 who is still on the payroll can still have that amount deducted from current wages, because the six year limit only applies to court claims.
If the same employee left in 2020 and the error was only discovered in 2027, a court claim would already be time barred.
Gross or Net? How Overpayment Deductions Are Calculated
Whether an overpayment is recovered on a gross or net basis depends on timing, and it directly affects how much a worker actually repays.
Where the overpayment involves a salary sacrifice deduction, payroll should also check it doesn’t push the employee past the HMRC salary sacrifice limit for that scheme, since correcting one figure can inadvertently affect the other.
| Timing of correction | Amount recovered | Why |
|---|---|---|
| Same tax year, employee still on payroll | Net amount received | PAYE correction adjusts tax and National Insurance automatically |
| After tax year ends, employee still on payroll | May require gross recovery | HMRC records for the closed year can’t be amended retrospectively |
| After employee has left the company | Usually gross amount | No further payroll run exists to correct net figures |
What Are Your Rights If You’ve Been Overpaid by Mistake?
If your employer has overpaid you, the money generally has to be repaid, but you still keep a number of rights along the way. You are entitled to:
- A written explanation of the overpayment, including amount, dates, and cause
- Time to check the figures before any deduction is made
- A repayment plan that reflects what you can reasonably afford
- The right to dispute the overpayment through your employer’s grievance procedure
- Advice from Acas or, in a formal dispute, escalation to an employment tribunal
Two defences can occasionally reduce or remove that obligation. The change of position defence can reduce the obligation to repay where you genuinely relied on the payment and spent it in good faith.
Estoppel applies where your employer confirmed the payment was correct and you reasonably relied on that, though it rarely removes the underlying right to recover entirely.
Can an Employer Recover an Overpayment After You’ve Left the Job?
Yes. Leaving the job does not cancel the underlying debt, recovery simply moves from a payroll deduction to a direct request for repayment:
- The employer identifies the overpayment and calculates the exact amount, including any final salary adjustment.
- The employer writes to the former employee with a full breakdown and a repayment request.
- The former employee can agree a plan, dispute the figures, or ignore the request.
- If informal contact fails, the employer can pursue a County Court claim, provided the six year Limitation Act 1980 window hasn’t passed.
- Courts weigh the cost of pursuing a small overpayment against the amount owed, so many employers write off small sums rather than litigate.
GOV.UK sets out how to make a money claim through the courts once matters reach this stage.
What Happens If You Refuse to Repay an Overpayment?
Ignoring a repayment request rarely ends the matter. Your employer can still deduct the amount from future wages while you remain employed, or pursue you through the courts if you’ve left.
Refusing to repay a genuine overpayment does not remove the employer’s right to recover it. If a repayment plan can’t be agreed, either side can escalate through Acas conciliation, a grievance procedure, or, for larger disputed sums, an employment tribunal or County Court claim.
Before escalating, ask for time to review the figures and propose a repayment plan you can afford — most disputes resolve at this stage.
Conclusion
An employee accidental overpayment salary error nearly always has to be repaid, either through a wage deduction while employed or a repayment request after leaving.
Employers should notify staff promptly and agree fair terms; employees should request a written breakdown before agreeing to any deduction. Employee accidental overpayment salary means repayment remains the norm for UK employers and staff in 2026.
FAQ
Can an employer claim back overpaid salary?
Yes. Under section 14 of the Employment Rights Act 1996, an employer can deduct a genuine accidental overpayment from future wages without needing prior written consent.
Do you have to pay your employer back if they overpay you?
Yes, in nearly all cases, including where a previous employer overpaid you and you no longer work there.
What happens if I refuse to pay back an overpayment?
Refusal does not cancel the debt. If still employed, your employer can generally deduct it from wages; formal disputes can escalate to a grievance procedure or the courts.
How long does an employer have to correct a payroll mistake in the UK?
There is no fixed limit on deducting from a current employee’s wages, but the salary overpayment recovery time limit uk for a court claim is six years, under section 5 of the Limitation Act 1980.
Is there a difference between gross and net wage deductions?
Yes. Recovery within the same tax year usually takes the net amount, while a correction after the tax year closes or after an employee leaves may require the gross amount.
This article is for general information only and does not constitute legal advice; consult Acas or a qualified employment solicitor about your specific situation.
