What is Constructive Dismissal?

Constructive dismissal can arise where an employee resigns because their employer has committed a serious or fundamental breach of the employment contract.

Although the employee technically resigns, employment law may treat the resignation as a dismissal because the employer's conduct caused the employee to leave.

This is commonly referred to as constructive dismissal or, where the statutory unfair dismissal requirements are satisfied, constructive unfair dismissal.

It is not enough simply to show that an employer behaved badly or acted unreasonably. The employee will usually need to establish that:

• The employer committed a fundamental breach of the employment contract
• The employee resigned because of that breach
• The employee did not wait so long that they effectively accepted or affirmed the breach

The breach may involve an express term written into the contract or an implied contractual obligation, such as the duty of mutual trust and confidence.

Constructive dismissal claims can be difficult to establish, so professional advice should normally be obtained before resigning where possible.

Can Constructive Dismissal Arise From More Than One Incident?

Yes.

A constructive dismissal claim does not always depend on one dramatic event.

Sometimes there is a series of incidents which, when viewed individually, might not be serious enough to justify resignation but together amount to a fundamental breach of contract.

This is sometimes described as the last straw principle.

For example, there may have been an ongoing pattern involving:

• Bullying
• Unreasonable management conduct
• Unjustified criticism
• Exclusion from important workplace activities
• Repeated contractual changes
• Failure to address grievances
• Other behaviour undermining trust and confidence

A final incident may then cause the employee to resign.

The final event does not necessarily need to be serious enough to amount to a fundamental breach on its own, but it should contribute to and relate to the earlier pattern of conduct.

Does the Employer Have to Intend to Break the Contract?

Not necessarily.

Whether a fundamental breach has taken place is generally assessed objectively.

The employer does not need to have deliberately intended to force the employee to resign.

For example, an employer might impose a substantial contractual change because of commercial pressures. The fact that the employer had a business reason for making the decision does not automatically prevent the change from amounting to a breach of contract.

The Tribunal will consider what the employer actually did and whether that conduct amounted to a sufficiently serious breach.

Can You Lose the Right to Claim by Continuing to Work?

Potentially, yes.

If an employer commits a fundamental breach but you continue working for too long without objecting, an Employment Tribunal may conclude that you accepted or affirmed the contract.

This can make a constructive dismissal claim much more difficult.

Factors that may be relevant include:

• How serious the breach was
• How long you continued working
• Whether you raised an objection
• Whether you submitted a grievance
• Whether you stated that you were working under protest
• Whether you acted in a way that suggested you accepted the new situation

There is no single fixed period after which the right to resign automatically disappears. Each case depends on its particular circumstances.

Can You Continue Working Under Protest?

Sometimes.

Where an employer imposes a contractual change without agreement, an employee may continue working temporarily while making it clear that they do not accept the change.

This is commonly known as working under protest.

If you take this approach, it is sensible to:

• State your objection clearly
• Put your position in writing
• Explain which change you do not accept
• Continue challenging the change
• Raise a grievance where appropriate
• Obtain advice promptly

Working under protest should generally be treated as a temporary position rather than something that continues indefinitely.

Acas advises that employees challenging imposed contractual changes should make their objection clear and should generally work under protest only for a short period while the issue is being challenged.

How Much Service Do You Need to Claim Constructive Unfair Dismissal?

As at 8 September 2026, an employee will generally need at least two years' continuous employment to bring an ordinary constructive unfair dismissal claim.

There are exceptions where no ordinary qualifying period is required, including certain situations involving:

• Whistleblowing
• Health and safety
• Pregnancy or maternity
• Certain statutory employment rights
• Automatically unfair reasons for dismissal

Separate claims, such as discrimination claims under the Equality Act 2010, do not require two years' service.

The law is changing.

From 1 January 2027, the qualifying period for ordinary unfair dismissal will reduce from two years to six months. This will also affect ordinary constructive unfair dismissal claims.

What Are Examples of Conduct That Could Lead to Constructive Dismissal?

Whether conduct amounts to a fundamental breach will always depend on the facts.

Potential examples include:

• Reducing your salary without contractual authority or agreement
• Demoting you without proper contractual justification
• Making substantial changes to your role without agreement
• Making unreasonable changes to your working location or hours
• Subjecting you to serious bullying or harassment
• Failing to deal with serious workplace complaints
• Making unfounded allegations against you
• Conducting disciplinary proceedings in a seriously unfair manner
• Imposing an unreasonable workload
• Failing to address serious work-related stress
• Failing to make required reasonable adjustments for a disability
• Requiring you to work in seriously unsafe conditions
• Deliberately undermining your authority
• Refusing to pay your agreed salary
• Repeatedly paying you less than the agreed amount without justification

Acas identifies examples such as repeated underpayment, bullying or discrimination, refusal to investigate a grievance and unreasonable changes to working patterns or location as conduct that can potentially support a constructive dismissal claim.

What is the Difference Between Constructive Dismissal and Unfair Dismissal?

The key difference is how the employment relationship ends.

Constructive Dismissal

In a constructive dismissal situation, you resign because you believe your employer has fundamentally breached your employment contract.

Although you resign, the law may treat the circumstances as a dismissal caused by the employer.

Unfair Dismissal

In an ordinary unfair dismissal situation, your employer dismisses you.

The Employment Tribunal then considers whether:

• There was a potentially fair reason for dismissal
• The employer followed an appropriate procedure
• The employer acted reasonably in treating that reason as sufficient to dismiss

Constructive unfair dismissal therefore combines contractual principles with statutory unfair dismissal law.

How Difficult is it to Bring a Constructive Dismissal Claim?

Constructive dismissal claims are often difficult.

Unlike an ordinary unfair dismissal situation, where the employer has clearly taken the step of dismissing the employee, the employee bringing a constructive dismissal claim must establish that the employer's conduct justified the resignation.

The employee will generally need to establish:

• A fundamental breach of contract
• That the resignation was caused by that breach
• That the employee did not affirm the contract
• That the relevant statutory eligibility requirements are satisfied

The evidence can therefore be particularly important.

Useful evidence may include:

• Employment contracts
• Emails
• Messages
• Meeting notes
• Grievance documents
• Performance reviews
• Witness evidence
• Medical evidence
• Written objections to contractual changes
• Resignation correspondence

Resigning before properly assessing the strength of the claim can create significant legal and financial risk.

Should You Raise a Grievance Before Resigning?

In many cases, yes.

If the situation can reasonably be addressed through an internal grievance, raising one gives the employer an opportunity to investigate and potentially resolve the problem.

A grievance may also help create a clear written record of:

• The conduct complained about
• When it occurred
• Who was involved
• How it affected you
• What action you asked the employer to take

Under the current Acas Code of Practice on disciplinary and grievance procedures, an Employment Tribunal may adjust compensation by up to 25% where either party unreasonably fails to follow the applicable Code.

However, whether you should wait for the entire grievance procedure to conclude before resigning is more complicated.

Waiting too long after a fundamental breach can create an argument that you accepted the employer's conduct.

The timing of a grievance and resignation should therefore be considered carefully.

Can an Employer Correct the Problem After You Raise a Grievance?

An employer may try to resolve the problem by:

• Upholding your grievance
• Reversing a decision
• Restoring contractual terms
• Apologising
• Taking disciplinary action against another employee
• Offering another practical solution

This can be highly relevant to what happens next.

An employer's later action does not necessarily erase the fact that an earlier fundamental breach may have occurred. However, your own response to the employer's attempt to resolve the problem can affect the legal position.

If you continue working after the issue has been addressed without reserving your rights, the employer may argue that the contract has been affirmed.

Whether a constructive dismissal claim remains available will depend on the particular facts.

Should You Explain Why You Are Resigning?

Yes, if you are resigning because of your employer's conduct, it is generally important to make this clear.

Your resignation letter should accurately explain the reasons why you believe you can no longer continue working.

Depending on the circumstances, it may be appropriate to identify:

• The contractual breach
• Important incidents
• Any grievance previously raised
• Failure to resolve the problem
• Why the breach caused you to resign

A Tribunal may examine your resignation letter when deciding whether the employer's conduct genuinely caused you to leave.

You should therefore avoid writing something inconsistent with the position you later intend to take.

For example, describing the employment relationship as entirely positive while later arguing that your employer fundamentally destroyed trust and confidence may create unnecessary difficulty.

Do You Have to Use the Words "Constructive Dismissal" in Your Resignation?

Not necessarily.

The legal question is not simply whether you used a particular phrase.

However, clearly explaining that you are resigning because of serious conduct or contractual breaches by your employer can help establish why the employment ended.

Where appropriate, you may state that you consider the employer's conduct to amount to a fundamental breach of contract and that you are resigning in response.

The wording of a resignation letter can have important consequences, so legal advice may be useful before sending it.

Can You Work Your Notice and Still Claim Constructive Dismissal?

Potentially, but this area requires care.

An employee who resigns in response to a fundamental breach may sometimes work some or all of their notice period.

However, continuing to work for a significant period can create an argument that the employee has accepted or affirmed the contract.

There is no universal rule that working a particular number of months automatically destroys a constructive dismissal claim.

The Tribunal will consider all the circumstances, including:

• The length of the notice period
• The seriousness of the employer's breach
• Whether the employee continued to object
• Whether further breaches occurred
• Why the employee continued working

In particularly serious cases, an employee may decide to resign with immediate effect rather than work their notice.

Acas recommends obtaining legal advice before leaving without working contractual notice because doing so can itself create contractual issues if the employee's position is not legally justified.

What Compensation Can Be Awarded for Constructive Unfair Dismissal?

Where a constructive unfair dismissal claim succeeds, compensation can generally include the same broad categories available in an ordinary unfair dismissal claim.

These can include:

• A basic award
• A compensatory award
• Loss of earnings
• Certain employment benefits
• Pension-related losses where appropriate

The amount will depend on matters including:

• Age
• Length of service
• Weekly pay
• Actual financial loss
• How quickly alternative employment is obtained
• Whether reasonable steps were taken to reduce losses
• Whether compensation should be adjusted for other reasons

Different remedies may apply where the case also involves discrimination, whistleblowing, breach of contract or another legal claim.

From 1 January 2027, the existing statutory cap on the compensatory award for ordinary unfair dismissal will be removed under the Employment Rights Act 2025.

What Happens to Restrictive Covenants After Constructive Dismissal?

A fundamental breach by an employer can potentially affect whether the employer can enforce certain post-termination contractual restrictions.

Restrictive covenants can include clauses preventing an employee from:

• Working for a competitor
• Soliciting former clients
• Dealing with particular customers
• Poaching former colleagues
• Carrying out competing business activities

If the employee validly accepts a repudiatory breach and brings the contract to an end, the employer may face difficulty relying on some contractual restrictions.

However, employees should not assume that all restrictions automatically disappear simply because they believe they have been constructively dismissed.

The validity and enforceability of restrictive covenants depend on:

• The wording of the contract
• The nature of the breach
• The type of restriction
• The employer's legitimate business interests
• Whether the restriction is reasonable
• The particular circumstances surrounding termination

Acas also notes that restrictive covenants are a complex area and generally need to be clear, specific and appropriately limited before an employer can seek to enforce them.

Legal advice should be obtained before taking action that may breach a restrictive covenant.

Can You Negotiate an Exit Instead of Resigning?

Potentially.

Where the working relationship has broken down but the employee has not yet resigned, it may be possible to explore an agreed exit.

This may avoid some of the uncertainty associated with resigning and bringing a constructive dismissal claim.

Possible settlement terms can include:

• Compensation
• Notice pay
• Accrued holiday
• Outstanding bonuses or commission
• An agreed termination date
• An employment reference
• Confidentiality provisions
• Non-derogatory statements
• Treatment of restrictive covenants
• Withdrawal of existing grievances or claims

If an agreement is reached, it will commonly be documented through a settlement agreement.

Settlement negotiations can be highly tactical, particularly where resignation has not yet occurred, so employees should understand the strength of their legal position before deciding how to proceed.

What Are the Time Limits for Constructive Dismissal Claims?

Employment Tribunal deadlines are strict.

As at 8 September 2026, the time limit for most constructive unfair dismissal claims is generally three months minus one day.

Where the employee works a notice period, the time limit will usually run from the effective date of termination, which will often be the final day of that notice period.

Where the employee resigns with immediate effect, the time limit will normally run from the date employment ends.

Before bringing most Employment Tribunal claims, you must normally notify Acas and go through Early Conciliation.

Where Acas is notified within the relevant limitation period, Early Conciliation can pause the Tribunal time limit.

From 1 October 2026, the general limitation period for most Employment Tribunal claims will increase to six months minus one day where the applicable time limit starts on or after that date.

An internal grievance does not normally extend the Employment Tribunal deadline.

What if You Have Less Than Two Years' Service?

Having less than two years' service does not necessarily mean that you have no legal options.

As at September 2026, you may still have other claims depending on the circumstances, including:

• Discrimination
• Whistleblowing
• Health and safety-related claims
• Unlawful deduction from wages
• Breach of contract
• Wrongful dismissal
• Claims relating to specific statutory rights

Some of these claims have no minimum qualifying period.

From 1 January 2027, employees will generally qualify for ordinary unfair dismissal protection after six months' continuous employment rather than two years.

What is Wrongful Dismissal?

Wrongful dismissal is different from unfair dismissal.

It is fundamentally a breach of contract claim, often involving notice or notice pay.

In a constructive-dismissal-type situation, an employee who resigns immediately in response to a sufficiently serious contractual breach may potentially claim contractual losses arising from the employer's breach.

This may include notice-related losses where appropriate.

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

However, wrongful dismissal will not necessarily provide the same remedies as a successful constructive unfair dismissal claim.

The correct type of claim will depend on the nature of the employer's conduct, your contract and your length of service.

When Should You Seek Advice?

Constructive dismissal is one of the more complex areas of employment law because resigning is usually an irreversible step.

Advice should ideally be obtained before resignation, particularly where:

• You are considering leaving immediately
• You have been subjected to serious bullying or harassment
• Your salary or role has been changed without agreement
• Your grievance has not resolved the issue
• You have restrictive covenants
• You have significant notice, bonus or commission entitlements
• You are considering a settlement agreement
• You believe discrimination or whistleblowing is involved
• A Tribunal deadline may be approaching

Understanding the strength of your position before resigning can help avoid taking a step that weakens a potential claim.