Employment Tribunal Claim Time Limits Explained

A workplace dispute can take time to process. You may be dealing with the loss of a job, financial uncertainty, a difficult manager or the impact of discrimination on your confidence and wellbeing. But employment tribunal claim time limits are often far shorter than people expect. Waiting until you feel ready can, unfortunately, put a valid claim at risk.

The right deadline depends on the type of claim and the facts of your case. It is therefore sensible to seek advice as soon as a dispute arises, even if you hope matters can be resolved informally. Early advice gives you room to consider your options, preserve evidence and take the required procedural steps without losing your position.

The usual employment tribunal time limits

For many claims, the deadline is three months less one day. This is not three calendar months from when you decide to act. The clock usually starts from a specific legal event, such as the date your employment ended or the date of the discriminatory act.

Common examples include:

• Unfair dismissal claims usually need to be brought within three months less one day of the effective date of termination.

• Constructive dismissal claims normally follow the same time limit, usually calculated from the date you resigned in response to the employer’s fundamental breach of contract.

• Discrimination claims, including those relating to race, sex, disability, pregnancy and maternity, religion or belief, age, sexual orientation or gender reassignment, generally have a three-month-less-one-day deadline from the act complained of.

• Unpaid wages, holiday pay and unlawful deductions from wages claims will commonly have the same three-month-less-one-day limit, although there are additional rules where a series of deductions is alleged.

Some claims have a longer deadline. For example, an equal pay claim is usually subject to a six-month-less-one-day time limit from the end of employment. Statutory redundancy payment claims also commonly carry a six-month deadline, though the tribunal may have limited power to extend this in particular circumstances.

These rules can be technical. A final payslip, an appeal outcome or a grievance decision does not necessarily change the date from which time runs. In an unfair dismissal case, for instance, the deadline is usually tied to the date employment ended, not the date you receive the outcome of an internal appeal.

Acas early conciliation and the tribunal clock

In most cases, you must notify Acas before you can submit an employment tribunal claim. This is called Early Conciliation. It is designed to give both sides an opportunity to explore settlement before formal proceedings begin.

Crucially, notifying Acas can pause the limitation period. The pause generally begins when Acas receives your Early Conciliation notification and ends when the Early Conciliation certificate is issued. The time that has passed before you notify Acas still counts, so it is not safe to leave notification until the last moment.

Once the certificate is issued, the calculation can become more complicated. Depending on the dates, you may receive the remaining time you had before conciliation began, or a minimum period of one month in which to present your claim. This does not mean every claimant has a full extra month from the original deadline. The result depends on the exact timeline.

A practical example illustrates the risk. If your employment ended on 30 June, an ordinary unfair dismissal deadline would normally fall on 29 September. If you contact Acas on 20 September, only a short period has elapsed before the deadline. Early Conciliation pauses time, but you must still act promptly once the certificate arrives. Leaving the tribunal application until the final day creates unnecessary risk if there is a technical problem with the online process or the date has been miscalculated.

Early Conciliation is not the same as raising a grievance, appealing a dismissal or writing to your employer. Those steps may be valuable and, in some situations, expected. They do not by themselves stop time running.

When does time start in discrimination cases?

Discrimination claims can be particularly difficult to date because the issue may not be a single incident. It may involve repeated comments, failures to make reasonable adjustments, exclusion from opportunities or a course of unfavourable treatment over time.

Where there is conduct extending over a period, the tribunal may treat the time limit as running from the end of that continuing conduct. However, not every series of unpleasant or unfair events will legally amount to conduct extending over a period. Separate acts may have separate deadlines, even where they involve the same people and a similar theme.

A continuing failure to make reasonable adjustments can also raise complex questions about when the employer made a relevant decision, or when it ought reasonably to have acted. Do not assume that an ongoing impact means the original act is automatically in time. Clear dates, contemporaneous documents and early legal advice are often decisive.

Can the tribunal extend the deadline?

Employment tribunal deadlines are strict, but the tribunal’s power to extend time varies according to the claim.

For discrimination claims, the tribunal can allow a late claim where it considers this just and equitable. It may look at the length of the delay, the reason for it, the effect on evidence and witnesses, and the prejudice to each side. There is no automatic extension for stress, illness, lack of legal knowledge or ongoing settlement discussions, although the circumstances may be relevant.

For unfair dismissal claims, the test is narrower. You must usually show that it was not reasonably practicable to present the claim in time and that you submitted it within a reasonable period afterwards. This is a demanding test. Being unaware of the deadline will not always be enough.

Claims for unpaid wages and holiday pay have their own rules on extensions. In many cases, the question is whether it was not reasonably practicable to present the claim in time. A tribunal will examine the evidence carefully rather than simply accepting that a delay was understandable.

The safest approach is never to rely on the possibility of an extension. It is a discretionary remedy, not a safety net that can be assumed.

What to do if you think you may have a claim

Start by writing down the key dates: when the relevant incident happened, when you were dismissed or resigned, when you received any decision in writing, and when you contacted Acas. Keep copies of your contract, payslips, emails, grievance correspondence, meeting notes and any evidence that supports your account.

You should also consider the outcome you want. That might be compensation for financial loss, unpaid wages or injury to feelings; a negotiated exit; correction of workplace treatment; or clarity about whether your employer has acted lawfully. Settlement can be constructive, but it should be approached with a clear understanding of your legal rights and the deadline that applies.

If you are still employed, taking advice does not mean you have decided to bring a claim. It can help you respond to a capability process, disciplinary matter, grievance, redundancy consultation or proposed settlement agreement in an informed way. If your employment has ended, timely advice can help ensure that your Acas notification and tribunal claim are properly framed.

Employment tribunal claim time limits: avoid costly assumptions

Small errors can have serious consequences. A claim submitted one day late may be rejected, even where the underlying treatment appears unfair. Equally, submitting a rushed claim without understanding the legal issues can make an already difficult dispute harder to manage.

At HW Legal Solicitors & Co, clients are more than cases. We can help you assess the facts, identify the applicable deadline, consider settlement and, where needed, prepare for firm representation at tribunal. Advice can be tailored to your priorities, with transparent discussion of the work involved and the likely next steps.

If you are approaching a deadline, focus first on protecting your position. Acting early gives you more choices, more time to prepare and a stronger foundation for resolving the dispute on terms that reflect what matters to you.