What is unfair dismissal?

Unfair dismissal occurs when an employer ends your employment for an unfair reason or without following a fair process.

Unfair dismissal means your employer ended your job in a way that the law recognises as unfair. The law allows a few exceptions where a dismissal is considered fair, such as legitimate capability concerns, conduct, redundancy, or other specified reasons, but these must be handled with a fair procedure.

Examples of unfair dismissal include being dismissed for taking part in trade union activities (if not allowed), whistleblowing, or for reasons unrelated to your job without a valid, non-discriminatory basis. It’s important to show the basis for your claim and the steps your employer should have taken to be fair.

To succeed, you usually need to show both the reason for dismissal is potentially unfair and that the employer did not follow a fair procedure leading up to the dismissal.

• Fair reasons exist (e.g., capability, conduct, redundancy) but must follow a fair procedure.
• A dismissal can be unfair even if the reason seems valid if the process was mishandled.
• Automatic unfair dismissal includes protected acts like whistleblowing or asserting rights under employment law.

1. Identify the date of your dismissal
2. Note any irregular steps or lack of procedure
3. Collect supporting documents (contract, handbook, emails)
4. Identify the potential unfair reasons and the procedures that were followed
5. Consider whether EC or ET is the right next step

Time limits for making a claim

The standard time limit is three months from the date of dismissal or the relevant act, with some extensions for ACAS Early Conciliation.

In most unfair dismissal cases, you must lodge your claim with a Tribunal within three months from the date of dismissal or from the act giving rise to the claim. This is set out in the Employment Rights Act 1996, and in most cases the clock starts on the day you leave the job.

If your claim also involves discrimination, the same three-month limit generally applies, measured from the date of the discriminatory act or the last in a series of acts. There are limited circumstances where the tribunal may consider late filings.

The Employment Tribunal can extend the time limit in certain circumstances, and this is more common when there has been ongoing negotiation or other valid reasons for delay.

• Three months from dismissal or act (the core rule).
• Discrimination claims share the same time limit, counted from the act or the last in a series.
• Tribunals may extend time for just and equitable reasons in certain cases.

1. Calculate the start date (dismissal date or first discriminatory act)
2. Count the days to the deadline
3. If in doubt, seek early advice to avoid missing the window

ACAS Early Conciliation and deadlines

ACAS Early Conciliation can extend the claims window and must be started before filing with the Employment Tribunal.

ACAS Early Conciliation is a free service designed to help resolve workplace disputes before formal tribunal proceedings. You can start EC by contacting ACAS online or by phone, and you will receive an EC certificate reference when conciliation begins.

The crucial rule is that the standard three-month clock can be paused during EC, and you may be able to lodge your ET claim up to one month after EC ends. This extension is designed to give you a fair chance to explore settlement without losing your right to bring a claim.

When you file your ET claim, you must include the EC reference number so the tribunal can see that EC took place. If EC is started, you should keep the certificate safe and reference it in the claim.

ACAS EC is voluntary and confidential, but listening to the conciliator can often prevent unnecessary tribunal proceedings.

• Start EC early to protect your deadline.
• EC can pause the time limit; you may have up to 1 month after EC ends to file your claim.
• Include the EC certificate reference in your ET claim.

1. Step 1: Contact ACAS to start EC
2. Step 2: Receive EC certificate reference
3. Step 3: Prepare your claim while EC runs
4. Step 4: File ET claim within extended window, including EC reference

Discrimination, protected characteristics and time limits

Discrimination claims share the standard time limit, with protected characteristics defining what counts as discrimination, and may be raised together with unfair dismissal.

Discrimination claims are subject to the same three-month deadline as unfair dismissal, counted from the date of the discriminatory act or the last act in a series. This applies to characteristics protected by the Equality Act 2010, including age, disability, gender reassignment, pregnancy and maternity, race, religion or belief, sex and sexual orientation, among others.

If you experience multiple discriminatory acts, you may be able to combine claims arising from those acts within the same complaint, provided they relate to the same or connected set of facts and are raised in one Tribunal claim.

Discrimination claims can be pursued alongside unfair dismissal; a successful settlement or tribunal decision may award compensation covering both issues when relevant.

• Equality Act 2010 protected characteristics include age, disability, race, sex, religion, pregnancy, and more.
• Same three-month deadline generally applies to discrimination claims.
• You can sometimes combine multiple discriminatory acts within one claim.

1. Identify the discriminatory acts and dates
2. Aggregate acts that form a continuing or connected pattern
3. File the claim with a clear basis for both unfair dismissal and discrimination (if applicable)

Preparing your claim and evidence

Gathering accurate records and clear timelines will strengthen your claim, particularly when time limits and EC are involved.

Collect employments documents, contracts, HR policies, emails, and witness statements that support your version of events. Write down key dates—dismissal date, first discriminatory act, and any steps your employer took in response to concerns.

Prepare a concise statement of events that explains how and why the dismissal happened and what you believe would have been a fair remedy or outcome.

Keep records of all communications with ACAS if EC was started, including the certificate reference and dates of contact.

Organise evidence so you can present a coherent timeline to the Tribunal if required.

• Contracts and policies
• Emails and internal communications
• Notes on conversations and meetings
• Witness statements
• A clear timeline connecting events to your claim.

1. List all relevant documents
2. Create a chronological timeline
3. Cross-check dates with EC certificate if applicable
4. Prepare a simple, factual statement of events

Tribunal process and next steps

What to expect at the Employment Tribunal and the possible outcomes, including remedies and sanctions.

If your ET claim proceeds, a Tribunal will assess the facts, the fairness of the dismissal, and the appropriateness of any remedy. Remedies may include reinstatement, re-engagement, or compensation for loss caused by unfair dismissal.

The process can involve preliminary hearings, disclosure of documents, and an oral hearing where witnesses may be called. The Tribunal will consider both your evidence and the employer’s defence before making a decision.

If you are successful, the Tribunal may order remedies such as compensation, back pay, or reinstatement. It may also impose costs or orders against the employer in certain circumstances.

• Remedies can include compensation, reinstatement, or re-engagement
• Tribunal process includes hearings, witness evidence and disclosure of documents
• Outcomes depend on the fairness of the dismissal and the facts presented

1. Submit the ET claim within the extended deadline
2. Attend any preliminary hearings
3. Provide documents in disclosure
4. Attend the final hearing and listen to the decision

Conclusion

A clear summary of unfair dismissal, EC, and time limits, and what to do next.

Understanding unfair dismissal and ACAS Early Conciliation helps you protect your rights and deadlines. By knowing the three-month clock, the EC extension, and how discrimination fits in, you can plan your next steps with confidence.

ACAS Early Conciliation offers a practical path to dispute resolution without immediately going to tribunal, but it does not guarantee a settlement. If EC ends without resolution, you can proceed to file your Employment Tribunal claim within the extended window.

Key takeaways

Quick, practical reminders to help you act promptly and protect your rights.

• The standard three-month limit applies to unfair dismissal and most discrimination claims.
• ACAS Early Conciliation can pause the clock and provide up to one month after EC ends to file.
• You must include the EC reference when filing your Employment Tribunal claim.
• Discrimination claims can be pursued alongside unfair dismissal where relevant.
• Gather evidence early and keep a clear timeline of events.

FAQ

Common questions about unfair dismissal and ACAS Early Conciliation answered concisely.

Q1: What is unfair dismissal in UK law?

Q2: How does ACAS Early Conciliation affect the time limits for claims?

Q3: Can I bring discrimination claims and unfair dismissal together?

Q4: What information do I need to file with the Employment Tribunal?

External links

Official sources for further information.

ACAS Early Conciliation provides free, confidential help with workplace disputes.

GOV.UK offers guidance on unfair dismissal, time limits, and tribunal procedures.

Call to action

Take the next step and check your deadlines and EC status.

If you think you have a potential unfair dismissal claim, act quickly: start ACAS Early Conciliation and gather your documents, then file your Employment Tribunal claim within the extended window if EC ends without a settlement.

• Start ACAS Early Conciliation early.
• Gather all relevant evidence.
• File your claim within the extended window if EC ends without settlement.

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Tribunal legal notes

This section provides additional legal references and examples.

Statutory reminders include: standard 3-month limit from dismissal (ERA 1996 section 111), extension rules (e.g., EC extension up to 1 month after EC ends), and discrimination case alignment (Equality Act 2010).