Employment Tribunal deadline
ET1 unfair dismissal deadline calculator
An unfair dismissal claim must usually reach the Employment Tribunal within three months less one day from the effective date of termination. ACAS Early Conciliation can change the final date.
Rule reviewed
At a glance
What the calculator applies
- Period
- Three calendar months less one day
- Trigger
- Effective date of termination
- Direction
- Forward from the effective date of termination
- Counting method
- Calendar months, then subtract one day
Free calculation
Calculate from the relevant date
The jurisdiction, forum and triggering event are preset for this deadline. Enter the date and any facts the calculator asks for.
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Calculation basis
How the date is counted
Calendar months, then subtract one day
The calendar-month calculation preserves the corresponding date where possible. The calculator shows any resulting month-end treatment.
Check before use
Exceptions and matter facts
- ACAS Early Conciliation changes the calculation and requires the Day A and Day B dates.
- A tribunal may consider a late claim where it was not reasonably practicable to present it in time and it was then presented within a reasonable period.
Check this result before using it
Deadline Engine is calculation software, not legal advice. Check the current rule, any order and the facts before adding the date to your diary.
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