How Long After Dismissal Can a Tribunal Claim Be Submitted

An unfair dismissal claim must be submitted to an Employment Tribunal within a strict legal deadline. This time limit is short and begins running from the date employment ends, subject to limited pauses where ACAS early conciliation is used.

Missing the deadline will normally prevent the claim from being heard, regardless of its strength. The time limit is set by statute and applied strictly by tribunals in England and Wales.

Standard Time Limit for an Unfair Dismissal Claim

Three months minus one day rule

The general rule is:

• A claim must be presented within 3 months minus 1 day
• The period starts from the effective date of termination (EDT)

The EDT is usually:

• The last day of employment under notice, or
• The date of dismissal if employment ends immediately without notice

Example calculation

If employment ends on:

• 10 January

The deadline is:

• 9 April at 11:59pm

This applies to most unfair dismissal claims in England and Wales.

When the Tribunal Clock Starts Running

The starting point is the effective date of termination (EDT), not necessarily:

• The date dismissal was communicated
• The date of a disciplinary hearing
• The date of an appeal decision

In most cases:

• With notice → EDT is the final day of the notice period
• Without notice → EDT is the dismissal date

This distinction is important because misidentifying the EDT can result in an out-of-time claim.

ACAS Early Conciliation and the “Stopping the Clock” Rule

Before submitting a tribunal claim, most individuals must notify ACAS and engage in early conciliation.

Mandatory pre-claim step

• ACAS notification is required before filing an ET1 claim form
• Early conciliation is designed to explore settlement without litigation

Effect on time limits

When ACAS is notified within the limitation period:

• The tribunal deadline is paused (“stopped”)
• The pause lasts from the date ACAS is notified until the early conciliation certificate is issued

This ensures claimants are not disadvantaged by the conciliation process.

What Happens After Early Conciliation Ends

Once ACAS issues a certificate:

• The limitation clock resumes
• A claimant will usually have at least 1 calendar month from the certificate date to submit the tribunal claim, even if the original deadline would have expired earlier

In some cases:

• The remaining time may be longer than 1 month, depending on how much time was left before conciliation began

Key Practical Time Limit Scenarios

Scenario 1: ACAS notified early

• Dismissal: 1 February
• ACAS notified: 15 February
• Certificate issued: 20 March

Outcome:

• Time between 15 Feb and 20 March is paused
• Claim must be submitted within remaining time, with minimum 1 month after 20 March

Scenario 2: ACAS notified close to deadline

• Dismissal: 1 February
• Deadline: 30 April
• ACAS notified: 29 April
• Certificate issued: 10 May

Outcome:

• Original deadline is paused on 29 April
• Claimant receives at least 1 month from 10 May

Scenario 3: ACAS notified after deadline

• If the 3-month deadline has already expired before notifying ACAS:
  • The claim is usually out of time
  • ACAS cannot restore an expired limitation period

Important Rules That Affect Timing

Internal procedures do not extend time

Time limits are not extended by:

• Grievances
• Disciplinary appeals
• Settlement discussions with the employer

The tribunal clock continues regardless of workplace processes.

Tribunal discretion is limited

Late unfair dismissal claims are rarely accepted unless:

• It was not reasonably practicable to submit on time

This threshold is applied strictly and is difficult to satisfy in most cases.

Different claims may have different deadlines

A dismissal situation may involve multiple claims, each with separate limits:

• Unfair dismissal → 3 months minus 1 day
• Discrimination → 3 months from act complained of
• Whistleblowing detriment → 3 months minus 1 day (with specific rules)

Each claim must be assessed separately.

Interim relief is a separate deadline

In certain cases (for example whistleblowing dismissals):

• An interim relief application must be made within 7 days of dismissal
• This is separate from the main tribunal claim deadline

Common Mistakes That Lead to Missed Claims

• Miscalculating the effective date of termination
• Assuming grievance procedures pause time limits
• Delaying ACAS notification until after the deadline
• Confusing dismissal date with appeal outcome date
• Not accounting for the “minus one day” rule

Key Takeaways

• An unfair dismissal claim must usually be submitted within 3 months minus 1 day from the effective date of termination
• ACAS early conciliation pauses the limitation period while it is ongoing
• After ACAS issues a certificate, claimants usually have at least 1 month to submit the ET1 form
• Internal workplace procedures do not extend tribunal deadlines
• Missing the deadline will normally prevent the claim from being heard