For decades, the three-month deadline on Employment Tribunal claims has been strictly enforced by Tribunals. A claim brought even slightly late, opened a claimant up to the very real risk of their claim being struck out.
On 1 October 2026, section 152 and Schedule 12 of the Employment Rights Act 2025 extended the limitation period for most claims from three to six months. The change applies to a wide range of claims including unfair dismissal, discrimination, detriment claims, unlawful deductions from wages, working time claims and TUPE-related claims. Equal pay and statutory redundancy payment claims already carried a six month limitation period and remain unchanged.
At first glance, the reform appears straightforward, however, for employers the consequences are more significant than simply adding another three months to the calendar.
When does the new limitation period apply?
Firstly, the six-month limitation period only applies where the relevant act, omission or dismissal takes place on or after 1 October 2026. Employers should note that claims arising from events before that date generally remain subject to the previous three-month deadline. Where a claimant alleges a continuing course of conduct, the limitation period runs from the last act As a result, an allegation involving conduct stretching back months or even years may still benefit from the new six-month period if the final alleged act occurred after 1 October 2026.
When this change is considered alongside the Acas early conciliation period, that was extended to twelve weeks in December 2025, employers could in practice be waiting far longer than six months to discover whether litigation is coming.
Practically speaking, if a claimant waits until late in the six-month limitation period, uses the full twelve weeks of Early Conciliation and benefits from the month-long statutory extension in section 207B(4) of the Employment Rights Act 1996, Employers could be waiting a full ten months before any claim is lodged. When tribunal processing delays are considered on top of that, employers may not receive a notice of claim form until close to a year after the events in question.
The impact of the change
The Government intends the extended limitation period to encourage parties to resolve disputes internally or through Acas before a claim is issued. It will also give employees more time to understand their position, obtain advice and prepare their case. Employers may therefore receive fewer hastily prepared claims, but should expect those that are issued to be more carefully considered and developed.
How employers should prepare
Employers should create clear and comprehensive records at the time events occur, while recollections remain fresh. Investigations, grievance meetings, informal discussions and the reasons for key decisions should all be documented to a consistently high standard.
A key priority will be preserving relevant evidence for longer. As many employers designed their retention practices around the previous three-month limitation period, they should review automatic deletion settings and retention periods for messaging platforms, CCTV footage and personnel files. Effective retention processes will be essential to meeting Tribunal disclosure obligations. If relevant evidence has been routinely deleted and cannot be produced, a Tribunal may draw adverse inferences.
Overall, the extended time limit gives employers a valuable opportunity to review their record-keeping and evidence-retention practices. If you would like to discuss how the change may affect your organisation, or have any questions, contact the Employment Law team at Michelmores.