When Does a Resignation Become Constructive Dismissal?

Constructive dismissal occurs where an employee resigns because of their employer's conduct. Legally, the resignation is treated as a dismissal because the employer's behaviour is considered a fundamental breach of contract.

Under UK employment law, constructive dismissal is not a separate cause of action on its own. Instead, it forms part of an unfair dismissal claim under the Employment Rights Act 1996. The central issue is whether the employer's conduct was serious enough to justify the employee treating the contract as ended.

What Is Constructive Dismissal?

Constructive dismissal arises where an employee resigns in response to a serious breach of contract by the employer, making continued employment untenable.

The legal test is based on section 95(1)(c) of the Employment Rights Act 1996, which recognises a dismissal where:

• The employee terminates the contract
• In circumstances where the employer has committed a fundamental breach of contract

The resignation is therefore treated as if the employer dismissed the employee.

Legal Test for Constructive Dismissal

Employment Tribunals typically apply a two-stage test:

1. Was there a fundamental breach of contract?

A fundamental breach is a serious violation of the employment contract, which may be:

• A breach of an express contractual term
• A breach of the implied term of trust and confidence

The implied term is often central. It requires employers not to act in a way that destroys or seriously damages the employment relationship.

2. Did the employee resign in response to that breach?

The employee must show that:

• The breach was the reason (or principal reason) for resignation
• They resigned because they could no longer continue working under the conditions created by the employer

If the resignation is unrelated to the breach, constructive dismissal will not be established.

Common Examples of Conduct Leading to Constructive Dismissal

Constructive dismissal claims often arise from patterns of behaviour rather than single incidents.

1. Breach of Trust and Confidence

This is the most common basis for constructive dismissal. Examples include:

• Bullying or harassment by management
• Unjustified accusations of misconduct
• Undermining behaviour or humiliation
• Failure to address complaints of workplace mistreatment

A breakdown in trust can make continued employment unreasonable.

2. Unilateral Changes to Contract Terms

Constructive dismissal may occur where the employer imposes significant changes without agreement, such as:

• Reduction in pay
• Changes to working hours or shift patterns
• Demotion or loss of responsibilities
• Relocation without contractual authority

Minor or reasonable administrative changes are less likely to meet the threshold.

3. Unsafe or Hostile Working Conditions

An employee may resign and claim constructive dismissal where the employer:

• Fails to address serious health and safety risks
• Exposes employees to unsafe working conditions
• Ignores repeated safety concerns
• Creates a hostile or intolerable working environment

4. Failure to Deal with Grievances

Constructive dismissal may arise where an employer:

• Ignores formal grievances
• Fails to investigate complaints
• Dismisses concerns without proper consideration
• Allows issues such as harassment to continue unchecked

Failure to follow internal procedures can contribute to a breach of trust and confidence.

5. Discriminatory Treatment

Where an employee experiences discrimination under the Equality Act 2010, this may form part of a constructive dismissal claim, particularly if:

• Discriminatory behaviour is ongoing
• Complaints are not addressed
• The working environment becomes intolerable

6. “Last Straw” Situations

Constructive dismissal can arise from a final incident added to a pattern of earlier breaches. This is known as the “last straw” doctrine.

Key points include:

• The final act does not need to be serious on its own
• It must contribute to the overall breakdown of trust
• The employee must resign in response to the cumulative conduct

Timing of Resignation

Timing is critical in constructive dismissal cases.

Delay in Resigning

If an employee waits too long after the breach, the tribunal may find that:

• They have accepted the breach
• They have affirmed the contract

This can prevent a constructive dismissal claim.

Prompt Resignation

To preserve a claim, the employee is generally expected to resign relatively soon after the breach or final incident, depending on circumstances.

Acceptance of Breach (“Affirmation”)

An employee may lose the right to claim constructive dismissal if they:

• Continue working for an extended period without objection
• Accept new terms or conditions
• Do not raise grievances or concerns

Affirmation suggests the employee has accepted the situation rather than treating it as a termination of contract.

Resignation Must Be Clear and Unambiguous

To establish constructive dismissal, the resignation should be:

• Clearly communicated
• Linked to the employer's conduct (ideally in writing)
• Not ambiguous or conditional unless clearly expressed

Employees are not required to use specific legal language, but clarity is important for evidential purposes.

Tribunal Assessment of Constructive Dismissal

Employment Tribunals assess:

• Whether there was a fundamental breach of contract
• Whether the breach was sufficiently serious
• Whether the employee resigned in response to it
• Whether the employee delayed too long before resigning
• Whether the employer's conduct fell below expected standards

The test is objective: it is based on how a reasonable employee would view the situation.

Burden of Proof

The employee must establish:

• The existence of a fundamental breach
• That resignation was caused by that breach

The employer may then argue that:

• No breach occurred
• The employee affirmed the contract
• The resignation was due to unrelated reasons

Time Limits for Claims

Constructive dismissal claims follow the same limitation period as unfair dismissal:

• Three months less one day from the effective date of termination (resignation date)

Before issuing a claim, the employee must usually go through ACAS Early Conciliation, which can pause the limitation period.

Remedies for Constructive Dismissal

If successful, remedies mirror unfair dismissal outcomes:

• Basic award based on age, service, and pay
• Compensatory award for financial losses
• Potential reinstatement or re-engagement (rare)

Compensation may be reduced if the employee contributed to the situation.

Key Distinction: Resignation vs Constructive Dismissal

Situation	Legal Outcome
Employee resigns voluntarily	No dismissal
Employer breaches contract and employee resigns in response	Constructive dismissal
Employee resigns long after breach without objection	Possible affirmation (no claim)

Key Takeaways

A resignation becomes constructive dismissal when an employer commits a fundamental breach of contract, and the employee resigns because of that breach. The breach must be serious enough to destroy trust and confidence or significantly alter contractual terms.

Tribunals assess whether the employer's conduct was sufficiently serious, whether the employee resigned in response, and whether they acted promptly. Constructive dismissal claims are highly fact-specific and depend heavily on evidence of conduct, timing, and communication.