Extension of Time Limits in Employment Tribunal Claims

Employment Tribunal claims in England and Wales are subject to strict statutory limitation periods. Most claims, including discrimination, unfair dismissal, and whistleblowing detriment, must be brought within three months less one day from the relevant act or termination date. In certain categories, such as redundancy pay and equal pay, longer time limits apply.

Where a claim is submitted outside the relevant deadline, it may still be considered if the tribunal grants an extension of time. However, extensions are exceptional and depend on statutory tests or discretionary judicial assessment. Understanding when and how time limits can be extended is essential for assessing whether a late claim may still proceed.

Legal Framework for Extending Time Limits

The ability to extend time limits depends on the type of Employment Tribunal claim.

Key legal sources include:

• Equality Act 2010, section 123 (discrimination claims)
• Employment Rights Act 1996 (unfair dismissal and related claims)
• Employment Tribunals Act 1996
• Employment Tribunal Procedure Rules

Each category of claim has its own extension test, with different thresholds for allowing late claims.

Extension of Time in Discrimination Claims

The “just and equitable” test

For discrimination claims under the Equality Act 2010, tribunals may extend time if it is “just and equitable” to do so.

This is a broad discretion but is applied strictly in practice.

Factors tribunals typically consider

Tribunals assess all relevant circumstances, including:

• Length of delay
• Reasons for the delay
• Whether the claimant knew or should have known about the time limit
• Whether evidence is still available and reliable
• Prejudice to the employer
• Overall fairness to both parties

There is no presumption in favour of granting an extension.

Key principle

The burden is effectively on the claimant to justify why the claim should proceed despite being late.

Extension of Time in Unfair Dismissal Claims

The “not reasonably practicable” test

For unfair dismissal claims, the tribunal may extend time only if it was not reasonably practicable to present the claim within the standard time limit.

This is a stricter test than the discrimination standard.

Examples where extension may be considered

• Serious illness preventing timely filing
• Incorrect or misleading advice from a competent authority
• Exceptional administrative or procedural barriers

Legal threshold

Tribunals interpret “not reasonably practicable” narrowly. Mere oversight or misunderstanding of deadlines is usually insufficient.

Extension in Other Employment Tribunal Claims

Wage and unlawful deduction claims

These are generally subject to the same strict 3-month limitation period, with limited discretion depending on the nature of the claim.

Equal pay and redundancy claims

These typically have a 6-month limitation period, but extensions are still tightly controlled and depend on statutory wording and tribunal discretion.

ACAS Early Conciliation and Its Impact on Extensions

ACAS Early Conciliation does not directly extend time limits but can affect whether a claim is in time.

Key points:

• The limitation period is paused during Early Conciliation
• Time resumes once the certificate is issued
• A minimum additional period (often one month) may apply after the certificate

However:

• If the original deadline has already expired before ACAS notification, conciliation does not revive the claim
• Extension rules still apply separately if the claim is out of time

Continuing Acts and Extension Considerations

In discrimination claims involving ongoing conduct:

• Time may run from the last act in a continuing series
• If a continuing act is established, the claim may still be in time without requiring an extension

Where the continuing act argument fails, claimants may then rely on the “just and equitable” test for extension.

Tribunal Approach to Extensions: Practical Reality

Although the law allows extensions, tribunals apply them cautiously.

General approach includes:

• Strict enforcement of time limits
• Careful scrutiny of delay explanations
• Reluctance to extend time without strong justification

Case law consistently shows that late claims are not automatically given the benefit of doubt, even in discrimination matters.

Common Reasons Given for Late Claims (and Tribunal Responses)

1. Ignorance of time limits

Usually rejected, as claimants are expected to take reasonable steps to understand legal rights.

2. Ongoing internal grievance procedures

Generally not sufficient, as internal processes do not pause limitation periods.

3. Illness or incapacity

May be accepted if severe and supported by evidence, but must directly explain inability to act.

4. Delay in obtaining legal advice

Not usually sufficient unless combined with other exceptional factors.

5. Misunderstanding ACAS process

Only relevant if objectively reasonable and supported by circumstances.

Evidence Required for Extension Applications

Claimants seeking an extension typically need to provide:

• A detailed chronology of events
• Medical evidence (if illness is relied upon)
• Correspondence showing attempts to pursue the claim
• Explanation of steps taken to understand or pursue rights
• Evidence of when knowledge of discrimination arose

The quality and clarity of evidence can significantly affect the outcome.

Interaction Between Extension and Limitation Disputes

Extension issues are often decided as a preliminary matter before the merits of the claim are considered.

Tribunals may:

• Strike out claims as out of time
• Allow the case to proceed if extension is granted
• Require a preliminary hearing specifically on limitation

Limitation disputes can therefore determine whether a claim proceeds at all.

Strategic Importance of Time Limit Extensions

Time limit extension rules are particularly important in:

• Workplace discrimination claims involving ongoing harassment
• Complex dismissal disputes
• Cases involving vulnerable claimants or delayed awareness
• Claims where evidence emerges over time

Despite their importance, reliance on extension is inherently uncertain due to strict tribunal interpretation.

Key Takeaways

Extension of time limits in Employment Tribunal claims is possible but limited. In discrimination claims, the tribunal may extend time if it is just and equitable, while unfair dismissal claims require proof that it was not reasonably practicable to file in time. ACAS Early Conciliation may pause but not restart limitation periods, and internal procedures do not affect deadlines. Tribunals apply extension tests strictly, meaning late claims face significant procedural risk unless strong justification is provided.