Employer recovering alleged overpayment

Short answer

Yes, in principle an employer in England and Wales can recover money it genuinely overpaid you, and the ordinary rules that protect wages do not stop it doing so. However, “can it deduct it” and “can it deduct it in the way it wants” are two different questions. There are important limits, and in some cases you may have a defence to repaying at all, or grounds to insist on a reasonable repayment plan.

The general legal position on wage deductions

Section 13 of the Employment Rights Act 1996 protects workers against unauthorised deductions from wages. Normally an employer can only deduct from your pay where the deduction is required or authorised by statute, or authorised by a term of your contract, or you have given your prior written agreement to it.

The recovery of an overpayment is a specific exception to that protection. Under section 14(1)(a) of the Employment Rights Act 1996, the section 13 protection simply does not apply where the purpose of the deduction is to reimburse the employer for an earlier overpayment of wages (or overpaid expenses). This is confirmed by Acas guidance.

The practical consequence is that if the deduction is genuinely to recover an overpayment, you cannot bring the usual unlawful deduction from wages claim in the employment tribunal to challenge it. That does not mean the money is automatically owed; it means the dispute over whether it is owed is decided under the ordinary law of debt and restitution rather than under the wages-protection rules.

Whether you actually owe the money

The starting point is that money paid to you by mistake is generally recoverable by the payer under the law of restitution, even if the mistake was entirely the employer’s fault. So the fact that the error was the employer’s does not, by itself, mean you can keep the money.

Before accepting the employer’s figure, it is worth checking:

1. Whether there was in fact an overpayment at all, and how it is calculated. Ask for a clear written breakdown showing the correct pay, what was actually paid, and the difference, with payslips.

2. Whether the sum is disputed for another reason, for example the payment was actually a contractual entitlement, a discretionary bonus that had been confirmed, holiday pay, or a sum agreed as part of a settlement or a pay rise. If the payment was in truth owed to you, it is not an overpayment and section 14 does not help the employer.

3. Whether some of the “overpayment” is really something else, such as a training-cost clawback or a loan, which is governed by different rules and usually needs a specific contractual clause.

Possible defences to repaying

Even where there was a genuine overpayment, you are not always required to repay it. The main defence is estoppel (sometimes described as “change of position”). Broadly, you may be able to resist recovery if you can show that:

You genuinely and reasonably believed you were entitled to the money;

The overpayment was the employer’s fault and not induced by anything misleading you did; and

You changed your position in good faith in reliance on the payment, for example by spending it in a way you would not otherwise have done, so that it would be unfair to make you repay.

This defence is fact-sensitive and does not apply if you knew or ought reasonably to have known that you had been overpaid. It is harder to rely on where your contract expressly requires you to check your pay and report discrepancies, because many employers now impose that duty. There is no implied duty to check your pay, so if there is no such clause the position is more favourable to you.

If the defence succeeds it may protect the whole sum, or only the part you can show you spent in reliance on it.

Limits on how and when the employer can deduct

Even where the debt is genuinely owed, there are constraints:

The deduction must genuinely be for reimbursement of the overpayment. If the employer tries to deduct more than was overpaid, or dresses up some other claim as an overpayment, the section 14 exception may not cover it and the excess could be an unlawful deduction.

National Minimum Wage rules still apply. An employer can recover a genuine overpayment even if this takes pay below the minimum wage for that period, but this is a specific carve-out; deductions that are not genuine overpayment recovery cannot be used to take you below the minimum wage.

Reasonableness and negotiation. There is nothing in the legislation that forces an employer to take the whole sum in one go. Acas and the TUC both note that it is often possible to agree that repayment is made in instalments, or in some cases that it should not be recovered at all, particularly where you reasonably failed to notice the overpayment and had already spent it. Recovering a large sum in a single pay packet, leaving you unable to meet essential outgoings, is something you can reasonably push back on.

If you have left the employment, the employer cannot simply deduct from wages it no longer pays you; it would have to ask you to repay and, if you refuse, pursue you as a civil debt.

Where a dispute is actually decided

Because section 14 removes the overpayment situation from the ordinary unlawful deductions jurisdiction, a genuine dispute about whether the money is owed is usually resolved as a civil debt claim in the county court, not in the employment tribunal. If the employer sues you there, you can raise estoppel or change of position, or dispute the calculation, as a defence. Equally, if the employer has deducted money that is not in truth an overpayment, you may be able to bring an unlawful deduction claim in the tribunal, so the correct route depends on how the sum is properly characterised.

Practical next steps

1. Ask the employer, in writing, for a full written explanation and breakdown of the alleged overpayment, including the dates, the correct figures, and the payslips relied on.

2. Check your contract, staff handbook and any offer letter for clauses about overpayments, deductions and a duty to check your pay. These strongly affect your position.

3. Do not simply agree to an immediate one-off deduction if it would cause hardship. Propose a realistic instalment plan in writing and keep a record of what is agreed.

4. If you dispute that the money is owed, or believe you have a change-of-position or estoppel argument, say so clearly in writing before any deduction is made, and set out why.

5. Raise it through the internal grievance procedure if informal discussion does not resolve it, and keep everything in writing.

6. Consider contacting Acas, whose helpline can advise on deductions and overpayments, and who provide early conciliation if a tribunal claim later becomes appropriate.

Key missing facts

The right answer for your situation depends on several things you have not yet said: whether there really was an overpayment or whether the sum was actually owed to you; how large it is and over what period; what your contract says about deductions and checking pay; whether you noticed the error and how you responded; whether you have already spent the money in reliance on it; and whether you are still employed there. If you tell me these details, I can give you a more precise assessment of whether you have to repay, how much, and on what terms.