Losing your job unexpectedly can be financially and emotionally challenging, particularly when you believe your employer has treated you unfairly. However, UK employment law provides important protections against unlawful termination of employment.

If you have been dismissed without a valid reason, denied a fair disciplinary process or dismissed for exercising your employment rights, you may have grounds to pursue an unfair dismissal claim in the UK.

Understanding your legal rights, the applicable deadlines and the employment tribunal process can help you make informed decisions.

This guide explains unfair dismissal in the UK, who can make a claim, the compensation available and the steps involved in challenging an unfair termination.

1. What Is Unfair Dismissal Under UK Employment Law?

Unfair dismissal occurs when an employer terminates an employee’s employment without a legally fair reason or fails to follow a fair and reasonable dismissal procedure.

Under the Employment Rights Act 1996, eligible employees are protected against unfair termination.

An employer generally needs to establish one of five potentially fair reasons for dismissal:

• Conduct: Misconduct or serious breaches of workplace rules.
• Capability: Inability to perform the job satisfactorily.
• Redundancy: A genuine reduction in the need for employees to undertake particular work.
• Statutory restriction: Continued employment would breach a legal requirement.
• Some other substantial reason: Another sufficiently substantial reason justifying dismissal.

However, identifying a potentially fair reason does not automatically make a dismissal lawful. Employers must also act reasonably and follow an appropriate procedure.

2. Who Can Make an Unfair Dismissal Claim?

Generally, employees in England, Scotland and Wales must meet certain eligibility requirements.

As of October 2026, most ordinary unfair dismissal claims require:

• Legal status as an employee.
• At least two years of continuous employment with the employer.
• A dismissal that is potentially unfair.
• Compliance with the applicable employment tribunal deadline.

However, under the Employment Rights Act 2025 reforms, the qualifying period is scheduled to reduce from two years to six months from 1 January 2027.

These changes apply to Great Britain. Northern Ireland has separate employment legislation and qualifying rules.

Importantly, some claims do not require the ordinary qualifying period.

3. What Makes a Dismissal Automatically Unfair?

Certain reasons for dismissal are considered automatically unfair under UK employment law.

Examples may include dismissal principally because an employee:

• Reported certain unlawful activities through protected whistleblowing.
• Asserted statutory employment rights.
• Took qualifying maternity or family leave.
• Participated in protected trade union activities.
• Raised certain workplace health and safety concerns.

An employee may be entitled to bring an automatically unfair dismissal claim even without two years of continuous service.

Dismissal involving discrimination based on protected characteristics may also give rise to a separate claim under the Equality Act 2010.

The Advisory, Conciliation and Arbitration Service (Acas) provides further guidance on automatically unfair dismissal and employees’ rights.

4. What Is the Difference Between Unfair Dismissal and Wrongful Dismissal?

Although frequently confused, unfair dismissal and wrongful dismissal in the UK are legally different.

Unfair dismissal concerns whether the employer had a fair reason for terminating employment and followed a reasonable process.

Wrongful dismissal concerns a breach of the employment contract, commonly involving failure to provide the required notice or payment in lieu of notice.

Unlike ordinary unfair dismissal, a wrongful dismissal claim does not generally require a minimum period of employment.

Depending on the circumstances, an employee may have grounds for both types of claim.

5. What Should You Do If You Have Been Unfairly Dismissed?

If you believe your employer dismissed you unfairly, taking prompt action is essential.

Step 1: Request Written Reasons

Ask your employer to explain the reasons for your dismissal in writing.

The statutory entitlement to written reasons depends on your circumstances and length of service, although special rules apply to certain dismissals.

Step 2: Gather Supporting Evidence

Preserve relevant documents, including:

• Employment contracts and staff handbooks.
• Dismissal letters and disciplinary records.
• Emails, messages and meeting notes.
• Payslips and performance assessments.
• Relevant witness statements.

Step 3: Appeal the Dismissal

Where an internal appeal procedure is available, submit an appeal explaining why you believe the decision was unfair.

The Acas Code of Practice on Disciplinary and Grievance Procedures outlines important principles, including fair investigations, hearings and opportunities to appeal.

However, an internal appeal does not extend the legal deadline for starting an employment tribunal claim.

6. How to Make an Employment Tribunal Claim

If the dispute remains unresolved, you may be able to bring an employment tribunal claim for unfair dismissal.

Step 1: Notify Acas

In most cases, employees must notify Acas before submitting a tribunal claim.

Acas offers early conciliation, which allows employees and employers to explore settlement without formal litigation.

Step 2: Check the Claim Deadline

A significant change took effect on 1 October 2026.

For most claims arising on or after that date, the tribunal time limit is six months minus one day.

For most claims arising before 1 October 2026, the deadline remains three months minus one day.

Notifying Acas within the applicable time limit pauses the limitation clock during early conciliation. Special deadlines apply to certain claims, including some applications for interim relief.

Review the official Acas employment tribunal time limits guidance.

Step 3: Submit Your Tribunal Claim

If conciliation is unsuccessful, Acas normally issues an early conciliation certificate.

You may then submit your claim using the appropriate tribunal procedure, including the ET1 claim form.

The UK Government’s employment tribunal guidance explains the process.

Employees representing themselves may also explore  McKenzie Friend support services, subject to the rules governing assistance and representation.

7. How Much Compensation Can You Receive for Unfair Dismissal?

Unfair dismissal compensation in the UK depends on several factors, including length of service, age, earnings and financial losses.

A successful claim may result in:

Basic award: Generally calculated using age, length of service and statutory limits on weekly pay.

Compensatory award: Intended to compensate for qualifying financial losses arising from the dismissal, subject to applicable legal restrictions.

The existing general statutory cap on compensatory awards is scheduled to be removed from 1 January 2027.

In appropriate cases, a tribunal may instead order reinstatement or re-engagement.

Compensation is not automatic, and the amount awarded will depend on the evidence and individual circumstances.

8. Can You Claim Constructive Dismissal?

Constructive dismissal may arise when an employee resigns in response to a sufficiently serious breach of contract by their employer.

Examples may include serious breaches of agreed employment terms or conduct fundamentally undermining the employment relationship.

However, resigning because you are unhappy at work does not automatically establish constructive dismissal.

These claims can be legally complex, making early professional advice particularly important.

Frequently Asked Questions

Can I claim unfair dismissal with less than two years of service?

Potentially. Certain automatically unfair dismissal claims do not require the ordinary qualifying period. The standard qualifying period is also scheduled to reduce to six months from January 2027.

Can I claim unfair dismissal without a solicitor?

Yes. Employees can represent themselves at an employment tribunal. However, professional advice or appropriate tribunal support may help with evidence, documentation and procedural requirements.

Conclusion

Being dismissed unfairly can affect your income, career and financial security. Understanding your employment rights and acting within the legal deadlines can make a significant difference when challenging an employer’s decision.

Whether you have recently lost your job, received a dismissal notice or believe your employer acted unlawfully, understanding your available legal options is an important first step.

Contact us now for professional guidance.