According to legislation.gov.uk, the Employment Rights Act 2025 (Commencement No. 4 and Transitional and Saving Provisions) Regulations 2026 were made on 26 May 2026 by Kate Dearden, Parliamentary Under Secretary of State at the Department for Business and Trade. The instrument does not create a fresh unfair dismissal scheme by itself. Its function is to bring earlier provisions of the Employment Rights Act 2025 into force and to set the rules for cases that sit around the changeover date. That distinction matters. Commencement regulations are often technical, but they decide when statutory rights and amendments begin to apply in practice. In this case, the focus is section 25 of the 2025 Act and Schedule 3, both of which concern unfair dismissal and related amendments to existing employment legislation.
The Regulations bring the reforms into force in two stages. The first stage starts on 1 July 2026, when section 25(5) is commenced only so far as needed for paragraph 5 of Schedule 3, and paragraph 5 itself is also commenced. The explanatory note says this is designed to let the Government use the power to make further consequential amendments from that date. In plain terms, the July step is mainly about legal housekeeping. It opens the route for further amendments connected with the repeal of section 124 of the Employment Rights Act 1996, using the wider consequential amendment power in section 154 of the 2025 Act. For most employers and employees, this is not yet the point at which the main unfair dismissal changes begin to govern live disputes.
The main operative date is 1 January 2027. From that date, section 25 comes into force so far as it has not already been commenced, and the rest of Schedule 3 comes into force as well. The Regulations make clear that these provisions are subject to the transitional and saving rules in regulation 4, so the January start date is not the whole story. For policy readers, this means the Government has chosen a deferred implementation model rather than immediate commencement. The statute is already enacted, but the substantive unfair dismissal amendments will not fully apply until the start of 2027. That gives departments, tribunals, employers and advisers a fixed lead-in period for preparation, systems changes and updated guidance.
Regulation 4 is the part most likely to matter in real cases. It says the amendments made by section 25(2) and (3), along with specified amendments in Schedule 3, will apply where an employee is dismissed before 1 January 2027 but the effective date of termination falls on or after that date. They will not apply where the effective date of termination falls before 1 January 2027. The practical effect is that calendar timing alone will not decide every case. A dismissal communicated in December 2026 could still fall under the new rules if the legal end date of employment is in January 2027 or later. The Regulations adopt the existing meanings of "dismissed" and "effective date of termination" from Part 10 of the Employment Rights Act 1996, so the changeover is tied to established statutory concepts rather than new definitions created for this instrument.
The instrument also includes a saving provision on section 25(4). It states that the amendment made by that subsection does not affect any regulations already made under section 209(5) of the Employment Rights Act 1996 as that subsection stood immediately before the amendment came into force. This is a continuity measure. Its purpose is to prevent older subordinate legislation from being disturbed simply because the parent Act has been amended. For legal teams and officials, that reduces the risk of accidental gaps or uncertainty in the secondary legislation that sits around the unfair dismissal regime.
For employers, the immediate position is relatively clear. Until the end of 2026, the present unfair dismissal rules broadly remain in place, while the July 2026 commencement mainly enables further consequential amendments behind the scenes. The larger operational change arrives on 1 January 2027, with special care needed for dismissals that begin before that date but take effect after it. For employees and representatives, the Regulations underline the importance of the effective date of termination in any case that spans the year end. Notice periods, the timing of termination, and the legal character of a dismissal will matter when deciding which version of the law applies. This instrument therefore has a narrower scope than the parent Act, but it will shape how the new regime is introduced on the ground.
The explanatory note also makes clear that the Government is relying on existing impact work prepared for the Employment Rights Bill rather than publishing a separate policy assessment for this commencement instrument. Those earlier assessments, first prepared when the Bill was introduced to Parliament on 10 October 2024 and supplemented by economic analysis and enactment summary impact assessments on 7 January 2026, are presented as the main account of expected costs and effects across business, the voluntary sector and the public sector. That is consistent with the narrow function of the Regulations. Their policy significance lies less in announcing a new reform than in fixing the timetable and boundary rules for one already passed by Parliament. For anyone tracking implementation of the Employment Rights Act 2025, the key dates are now set: a limited commencement on 1 July 2026, and the main unfair dismissal changes from 1 January 2027, with transitional treatment determined by the effective date of termination.