This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Learn the difference between constructive dismissal and unfair dismissal under UK employment law. This detailed guide explains legal definitions, qualifying service, employer conduct, tribunal procedures, examples, evidence, and key distinctions for employees and employers in England and Wales.
Employment law in England and Wales recognises a range of dismissal claims an employee can bring when their employment comes to an end. Two commonly misunderstood but legally distinct concepts are constructive dismissal and unfair dismissal. Although they can overlap in practice and both can be pursued at an Employment Tribunal, they arise from different legal foundations and involve different tests, rights, and outcomes. This article explains their meaning, key differences, legal requirements, processes, practical examples, and common questions for employees and employers.
What Is Unfair Dismissal?
Unfair dismissal is a statutory claim under the Employment Rights Act 1996 which protects employees from being dismissed in an unreasonable or unlawful way. An employee may have a right to bring an unfair dismissal claim if:
- they are an employee (not a worker or contractor);
- they have the qualifying period of service (generally two years' continuous service, with reforms planned to reduce this to six months from early 2027 under the Employment Rights Bill); and
- the dismissal was unfair because it lacked a fair reason, was not reasonable in all the circumstances, or the employer did not follow a fair procedure.
Fair Reasons for Dismissal
The law recognises several potentially fair reasons for dismissal, including:
- Capability or qualifications;
- Conduct;
- Redundancy;
- Statutory restriction (e.g., loss of licence required for the job); and
- Some other substantial reason.
If an employer cannot justify the reason or procedure for dismissal, a tribunal may find the dismissal unfair and award compensation, subject to statutory limits.
What Is Constructive Dismissal?
Constructive dismissal is a contract-based claim that arises when an employee resigns because of the employer's conduct. The law treats this resignation as a dismissal because the employer's actions or omissions fundamentally breach the employment contract, leaving the employee with no reasonable alternative but to leave.
To establish constructive dismissal, an employee must show:
- the employer committed a serious breach of contract (often a breach of the implied term of mutual trust and confidence);
- they resigned in response to that breach; and
- they did not affirm the contract by continuing to work after the breach.
Examples include unilateral changes to key terms (such as duties or pay), bullying or harassment, repeated failure to pay wages, or failure to address serious grievances.
Constructive Dismissal and Unfair Dismissal – The Legal Relationship
While constructive dismissal arises from contract law, it can also form the basis of an unfair dismissal claim if an employee has the requisite qualifying service. When an employee resigns in response to a fundamental breach and then brings an unfair dismissal claim, the tribunal often refers to this as constructive unfair dismissal.
In other words:
- Constructive dismissal is about the employer's breach of contract that forced resignation.
- Unfair dismissal examines whether the termination (including constructive dismissal) was fair having regard to statutory reasons and procedures.
An employee may pursue both constructive dismissal (as a breach of contract claim) and unfair dismissal (as a statutory claim) in a tribunal claim if they qualify.
Key Differences: Constructive vs Unfair Dismissal
| Feature | Constructive Dismissal | Unfair Dismissal |
|---|---|---|
| Legal basis | Contract law | Statutory rights under Employment Rights Act 1996 |
| Who brings it | Employee resigning due to employer's conduct | Employee dismissed by employer (express or deemed dismissal) |
| Qualifying service | Usually at least two years to bring a tribunal claim (with exceptions for discrimination and other statutory reasons) | Generally two years of service (subject to future government reforms to six months) |
| Focus of claim | Employer breach of contract | Whether dismissal was fair and lawful |
| Outcome | Compensation for breach of contract and possibly unfair dismissal | Compensation limited by statutory caps (subject to future reform) |
| Procedure | Employee must resign promptly | Employer must follow fair procedure before dismissal |
Practical Examples
Constructive Dismissal Example
Jane is asked to take on significantly more responsibilities without agreement and without pay adjustment. Her employer also ignores her formal complaints of bullying. Jane resigns because the situation is untenable. A tribunal might find that her employer fundamentally breached the implied term of trust and confidence, giving rise to constructive dismissal.
If Jane has enough qualifying service, she may then also pursue an unfair dismissal claim based on that constructive dismissal.
Unfair Dismissal Example
Tom has worked for three years. He is dismissed without any disciplinary process or explanation. If Tom cannot show a fair reason for his dismissal or that a reasonable process was followed, he may bring an unfair dismissal claim at the tribunal.
Time Limits and Tribunal Process
Most claims for unfair dismissal and constructive unfair dismissal must be lodged at an Employment Tribunal within three months minus one day of the date employment ended. Before submitting a claim, an employee must usually engage in ACAS Early Conciliation, which can extend the period to lodge a claim while conciliation is underway.
Constructive dismissal claims also face this three‑month time limit and require evidence that resignation followed the breach without undue delay.
Practical Considerations
Evidence and Preparation
Both claims require evidence. For constructive dismissal this will focus on employer conduct and contract terms, whereas unfair dismissal focuses on reason and procedure. Common evidence includes emails, contracts, grievance records, witness statements, and formal correspondence.
Combined Claims
Many claimants raise combined constructive and unfair dismissal claims where the tribunal considers both the contractual breach and statutory fairness.
Settlement Agreements
A settlement agreement may resolve disputes without tribunal proceedings, but the employee usually waives their rights to bring claims once signed.
Key Takeaways
Constructive dismissal and unfair dismissal are distinct but related legal concepts under employment law in England and Wales. Constructive dismissal arises from a fundamental breach of contract that forces an employee to resign, while unfair dismissal is a statutory claim about whether the termination of employment was justified and lawful. Constructive dismissal can lead to an unfair dismissal claim if qualifying service exists. Both types of claims must usually be brought within strict time limits to an Employment Tribunal and involve different elements of evidence and legal tests.
