Unfair Dismissal

30 Frequently Asked Questions Answered

What is unfair dismissal?

Unfair dismissal is a claim that your employer ended your employment without following a fair procedure or for an unfair reason. You must have worked for the employer for 2 years (with limited exceptions) to claim unfair dismissal.

How long must I have worked for my employer to claim unfair dismissal?

Generally, you must have 2 years of continuous service. Exceptions include dismissal for a protected reason (pregnancy, whistleblowing, jury duty, union activity, etc.), which can be claimed immediately. The Employment Rights Act 2025 may reduce this threshold — check the latest commencement orders.

What makes a dismissal unfair?

A dismissal is unfair if (1) the reason was unfair (not one of five potentially fair reasons), (2) the procedure was defective (lack of investigation, no meeting, no appeal), or (3) it was automatic unfair dismissal (no qualifying period applies). The employer must prove the reason was fair and the procedure was reasonable.

What are the five potentially fair reasons for dismissal?

Conduct, capability, redundancy, breach of statutory duty, and "some other substantial reason". Even if the reason falls into one of these categories, the dismissal can still be unfair if the procedure was defective or the response was unreasonable.

What is automatic unfair dismissal?

Automatic unfair dismissal occurs when someone is dismissed for a protected reason: pregnancy, whistleblowing, union activity, taking time off for jury duty, health and safety reasons, or asserting a statutory right. No qualifying period applies — you can claim unfair dismissal even after 1 day of employment.

Complete guide to unfair dismissal claims in the UK

Unfair dismissal is one of the most common employment tribunal claims. Below are 30 essential questions and answers covering everything from the qualifying period to compensation, ACAS conciliation, and what happens at a hearing.

Qualifying Period & Service

How long must I have worked for my employer to claim unfair dismissal?

Generally, 2 years of continuous service. This is the statutory qualifying period. However, exceptions exist (see below). Note: the Employment Rights Act 2025 may reduce this threshold — check commencement orders.

Does a break in service count against me?

A break in service breaks continuity. If you left and came back, the 2-year clock restarts. Short breaks (illness, holidays, lay-offs in certain industries) may not break continuity — it depends on the type of break and contract terms.

Can I claim unfair dismissal if I have less than 2 years' service?

Yes, if you were dismissed for a protected reason: pregnancy, whistleblowing, union activity, jury duty, health and safety, or asserting a statutory right. These are "automatic unfair dismissal" claims with no qualifying period.

Does part-time work count towards the 2 years?

Yes. Part-time and full-time work both count. The law does not distinguish by hours. 2 years of part-time work = 2 years of qualifying service.

If I was on probation, does probation count towards the 2 years?

Yes, probation counts. The fact that you were on probation does not remove the 2-year qualifying period (unless you were dismissed for a protected reason). However, probation dismissals often turn on conduct issues, and procedural requirements may be less strict for probation dismissals.

What Makes a Dismissal Unfair?

What is the legal test for unfair dismissal?

The employer must (1) show the reason for dismissal was one of five potentially fair reasons, and (2) show the dismissal was reasonable in the circumstances. If the employer cannot prove both, the dismissal is unfair. The burden is on the employer.

What are the five potentially fair reasons for dismissal?

(1) Conduct: dishonesty, theft, violent behavior, etc. (2) Capability: inability to do the job, lack of qualifications. (3) Redundancy: genuinely redundant role. (4) Breach of statutory duty: e.g., a HGV driver losing their license. (5) Some other substantial reason: catch-all for reasons not in the first four.

What is the "band of reasonable responses" test?

Even if the reason is fair, the response must be reasonable. Different employers might respond differently to the same misconduct — some might warn, others might dismiss. A dismissal is unfair if no reasonable employer would have dismissed in the same circumstances.

Can I be dismissed for gross misconduct without a hearing?

Not fairly. Even for gross misconduct, you must be given the chance to respond. An investigation is needed, and you must be told the allegation and given an opportunity to put your side before dismissal. Summary dismissal (without notice) may be fair for serious misconduct, but the procedure must still be followed.

What procedural steps must an employer follow?

There is no fixed procedure, but good practice includes: (1) Investigation of the allegation, (2) A disciplinary meeting where you are told the allegation and can respond, (3) A decision, (4) An appeal. The ACAS Code of Practice sets out these steps.

What is the ACAS Code of Practice and why does it matter?

The ACAS Code of Practice sets out good practice for disciplinary and grievance procedures. If an employer unreasonably fails to follow the Code, the tribunal can award an uplift of up to 25% on compensation. Following the Code is not a legal requirement, but failing to follow it can be costly.

Can procedural failures be fixed if the outcome would have been the same?

No. Procedural fairness is important in itself. Even if the dismissal would have happened with a fair procedure, the dismissal is still unfair if the procedure was defective. However, compensation is reduced by the "Polkey reduction" to reflect the chance of dismissal anyway.

What is automatic unfair dismissal?

Dismissal for a protected reason is automatically unfair with no qualifying period: pregnancy, whistleblowing, jury duty, union activity, health and safety, or asserting a statutory right. You can claim unfair dismissal the day you are dismissed if it is for one of these reasons.

Dismissal in Special Circumstances

Can I be fairly dismissed while on sick leave?

Yes, but with strict conditions. If the employer dismisses you for poor performance or conduct (not sickness-related), the normal unfair dismissal rules apply. If dismissing for sickness-related reasons, the employer must consult with you, consider alternatives (redeployment, adjustments), and show the dismissal was proportionate.

If I am dismissed while pregnant, is it automatically unfair?

If dismissed because of pregnancy, yes — it is automatically unfair with no qualifying period. If dismissed for another reason (poor performance, redundancy) and you happen to be pregnant, the normal unfair dismissal rules apply. Pregnancy discrimination is a separate claim under the Equality Act 2010.

What if I was dismissed during maternity leave?

Dismissal during maternity leave is automatically unfair unless it was for a reason unrelated to the maternity (e.g., redundancy affecting the role — even then, special rules apply). You are protected from dismissal because of pregnancy or maternity until you return to work (or after if it is maternity-related).

Can I be dismissed for whistleblowing?

No. Dismissal for making a protected disclosure (whistleblowing) is automatically unfair with no qualifying period. You are protected even if your disclosure was wrong, provided it was made in good faith. This is one of the strongest automatic unfair dismissal protections.

What about dismissal for union activity?

Dismissal for union membership or union activities is automatically unfair with no qualifying period. You are protected for joining a union, attending union meetings, or taking action in your capacity as a union representative (if you have been appointed).

What is "constructive dismissal" and is it the same as unfair dismissal?

Constructive dismissal is when you resign because the employer's conduct makes the role intolerable. It is treated as a dismissal for unfair dismissal purposes. You must prove the breach was serious enough to justify leaving, and you must resign promptly (not wait months). Constructive dismissal claims are difficult to win.

What if I was on a fixed-term contract?

Fixed-term contracts are treated the same as permanent contracts for unfair dismissal. If the contract expires and is not renewed, it may still be unfair dismissal if the reason was unfair or the procedure was defective. The 2-year qualifying period applies to fixed-term workers.

What if I was dismissed after being offered another role and I refused?

Refusal of alternative employment can be a fair reason for dismissal in redundancy situations. However, the role must be truly suitable and on no less favorable terms. If the offer was unsuitable or significantly different, refusing it is not grounds for fair dismissal.

Time Limits and the Tribunal Process

How long do I have to file a tribunal claim?

3 months from dismissal. The deadline is strict. You must file your ET1 (claim form) within 3 months or lose the right to claim. Do not rely on settlement discussions to extend this deadline.

What is ACAS early conciliation?

You must notify ACAS before filing a tribunal claim (unless you are claiming only breach of contract). ACAS will try to settle your case. This process pauses the 3-month deadline for 1 month (or longer by agreement). Most cases settle at this stage.

What happens at a preliminary hearing?

A preliminary hearing (PHR) is held before the full hearing. It addresses case management and may deal with threshold questions (e.g., do you have 2 years' service?). It is before a single judge and is usually short. You do not need legal representation.

Can a case be struck out if it has no reasonable prospect of success?

Yes. The respondent can apply to strike out a claim that has no reasonable prospect of succeeding (e.g., you clearly do not have 2 years' service and no exception applies). Strikes out require tribunal permission.

Do I need a lawyer for the hearing?

No. Many claimants represent themselves. However, employment law is complex, and a representative (solicitor or trade union) can help. Some offer no-win-no-fee agreements. Legal aid is very limited for employment claims.

What happens at the final hearing?

Both parties present evidence and arguments. You and your witnesses give evidence; the employer does the same. The tribunal (1-3 judges) makes findings of fact and applies the law. A written judgment follows weeks later, often with detailed reasoning.

What is a settlement/compromise agreement?

A settlement agreement (often called a compromise agreement or COT3 if through ACAS) is a binding agreement to end the dispute. Both parties agree terms and the claimant withdraws the claim. Settlements are confidential and final.

Can the tribunal order reinstatement or re-engagement?

Yes. If you win unfair dismissal, you can ask for reinstatement (same job) or re-engagement (similar job). The tribunal can order this, but it is rare (most employers refuse). Compensation is the usual remedy.

Compensation and Damages

How is unfair dismissal compensation calculated?

Compensation = basic award + compensatory award. The basic award is based on age, service, and weekly pay (capped at around £33,000 in 2026). The compensatory award covers lost earnings, benefits, and future loss (uncapped). Other deductions (Polkey, contributory fault, mitigation) apply.

What is the Polkey reduction?

If the employer shows a fair procedure would have led to dismissal anyway, compensation is reduced proportionally (0%-80% typically). This applies to procedurally unfair dismissals. It is a percentage reduction from the compensatory award.

What is contributory fault?

If you contributed to your dismissal (by your conduct or actions), compensation is reduced by 0%-100%. For example, if you were partly to blame for the conduct leading to dismissal, a reduction applies. The employer must prove your contribution.

Do I have to mitigate my loss?

Yes. You are expected to take reasonable steps to find new work. Failure to look for a job or take suitable employment will reduce your compensation. The burden is on the employer to prove lack of mitigation.

What if I find a new job paying more than my old job?

Your loss is reduced (or eliminated). If you find work quickly at the same or higher pay, you may recover only the period of unemployment plus benefits lost, pension, etc. The tribunal takes the view you have mitigated your loss.

What if the tribunal awards less than I expected?

You can appeal only on points of law (not on the amount of compensation). Appeals are rare and require permission. Most claimants accept the tribunal's decision. Consider appealing only if there was a fundamental legal error.

Can I claim for injury to feelings in unfair dismissal?

Generally, no. Unfair dismissal compensation is limited to financial loss (lost wages, benefits, pension). Injury to feelings awards are available in discrimination claims. However, you can claim additional loss if the unfair dismissal caused significant financial detriment beyond lost wages.

What is the ACAS Code of Practice uplift?

If the employer unreasonably failed to follow the ACAS Code of Practice for disciplinary procedures, compensation is uplifted by up to 25%. This is an uplift on top of the calculated award. It encourages employers to follow proper procedure.

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