What is Unfair Dismissal in Employment Law?

Unfair dismissal is a key protection under UK employment law that allows employees to challenge a termination of employment that is not legally fair. It is governed primarily by the Employment Rights Act 1996 and is enforced through the employment tribunal system.

In simple terms, a dismissal may be classed as unfair if an employer does not have a valid legal reason to dismiss an employee, or fails to follow a fair process before doing so.

This article explains what unfair dismissal means, who can bring a claim, how the law is applied, and what happens if a claim is made.

Legal Definition of Unfair Dismissal

A dismissal is generally considered potentially unfair where:

• The employer does not have a fair reason for dismissal
• The reason is not sufficient to justify dismissal
• A fair procedure was not followed before dismissal

Tribunals assess both the reason for dismissal and the fairness of the employer's actions, including whether proper disciplinary or capability procedures were followed.

Who Is Protected by Unfair Dismissal Law

Employee status requirement

Only individuals classed as “employees” (not self-employed contractors or freelancers) can bring an unfair dismissal claim.

Qualifying service

In most cases, employees must have at least two years' continuous service with their employer to bring an ordinary unfair dismissal claim.

Without this qualifying period, a claim is usually not available unless the dismissal falls within an exception (see below).

Automatically Unfair Dismissal

Certain reasons for dismissal are treated as automatically unfair. In these cases:

• No minimum length of service is required
• The fairness of the employer's procedure is less relevant than the reason itself

Common examples include dismissal for:

• Whistleblowing
• Pregnancy or maternity-related reasons
• Requesting statutory rights (such as minimum wage)
• Trade union membership or activity
• Health and safety concerns
• Jury service
• Taking parental or other family-related leave
• Participation in lawful industrial action (in specific circumstances)

If the primary reason for dismissal falls into one of these categories, the dismissal is unlawful regardless of how long the employee has worked there.

Fair Reasons for Dismissal

Employers may lawfully dismiss employees if they can show one of the following potentially fair reasons:

• Capability or performance (including illness or lack of skills)
• Conduct (misconduct or disciplinary issues)
• Redundancy
• Legal restriction (where continued employment would be unlawful)
• “Some other substantial reason” (a broad category used in specific cases)

However, having a potentially fair reason is not enough on its own. The employer must also act reasonably in treating that reason as sufficient for dismissal.

Fair Procedure Requirements

Even where a fair reason exists, employers are expected to follow a fair process. This typically includes:

• Investigating the issue properly
• Informing the employee of concerns
• Holding a disciplinary or capability meeting
• Allowing the employee to respond
• Offering the right of appeal

Failure to follow a fair process can make an otherwise lawful dismissal unfair.

The ACAS Code of Practice on disciplinary and grievance procedures is commonly used as a benchmark in tribunal cases.

Constructive Unfair Dismissal

Unfair dismissal can also arise where an employee resigns due to the employer's conduct.

This is known as constructive dismissal and may occur where:

• The employer breaches the employment contract seriously
• The employee resigns in response to that breach

Examples may include serious workplace misconduct, failure to pay wages, or a hostile working environment.

How to Bring an Unfair Dismissal Claim

Step 1: Early conciliation (ACAS)

Before starting a tribunal claim, the employee must usually notify ACAS and attempt early conciliation.

Step 2: Employment tribunal claim

If no resolution is reached, a claim is submitted to an employment tribunal using an ET1 form.

The tribunal is independent and will review evidence from both sides before making a decision.

Time Limits for Claims

Strict deadlines apply:

• Most claims must be submitted within 3 months less 1 day from the date employment ended (the “effective date of termination”)

Missing this deadline usually means the claim cannot proceed, unless exceptional circumstances apply.

Remedies and Compensation

If a tribunal finds unfair dismissal, it may order:

• Reinstatement (returning to the job)
• Re-engagement (returning to a similar role)
• Financial compensation

Compensation may include:

• A basic award (similar to statutory redundancy pay)
• A compensatory award for lost earnings and benefits

There are statutory limits on compensation in most cases, although these can change over time due to legislative reform.

Common Examples of Unfair Dismissal

Unfair dismissal claims often arise from:

• Poorly handled disciplinary proceedings
• Redundancy processes without proper consultation
• Sudden dismissal without investigation
• Performance concerns without adequate warnings or support
• Dismissals linked to protected rights or whistleblowing

Each case depends heavily on evidence and procedure.

Key Distinction: Unfair vs Wrongful Dismissal

• Unfair dismissal: Focuses on fairness and legality of the dismissal process and reason
• Wrongful dismissal: Focuses on breach of contract, usually notice pay or contractual terms

Both claims can exist separately or together depending on circumstances.

Key Takeaways

Unfair dismissal occurs when an employer terminates employment without a fair legal reason or fails to follow a fair procedure. Most employees need two years of service to bring a claim, although some dismissals are automatically unfair from day one. Claims are made to an employment tribunal, usually within three months of dismissal. Remedies may include reinstatement or financial compensation.