If your Employment Rights Act 2025 compliance notes still say "3 months" for tribunal time limits, they're about to be wrong — the deadline doubles to 6 months on 1 October 2026, and most small businesses have no idea it's happening this month.
The Act has been rolling out in waves since late 2025, and it isn't finished. Some of the biggest changes — day-one paternity and parental leave, statutory sick pay from day one, the Fair Work Agency itself — are already live and already enforceable. Others land in the next few weeks. Here's what's actually changing, and where the genuine confusion is.
The Tribunal Deadline Doubles on 1 October 2026 — With a Transitional Trap
From 1 October 2026, the time limit for bringing most employment tribunal claims extends from 3 months to 6 months (Scotland's equivalent change for breach of contract claims follows on 9 November 2026). On its face, this is good news for employees and a longer exposure window for employers.
The part most guidance skips is the transitional "relevant date" rule: whether a claim gets the new 6-month window or is still governed by the old 3-month one depends on exactly when the underlying event — the dismissal, the act of discrimination, the unlawful deduction — actually happened, not when the claim is filed. Getting this wrong in either direction is expensive: an employer who assumes an old claim is time-barred, or an employee who assumes they have longer than they do, can lose the argument before the facts are even heard. If you're unsure which side of the line a specific date falls on, that's a question for Acas or an employment solicitor before you rely on either deadline.
Unfair Dismissal Now Runs on Two Different Clocks
From January 2027, the qualifying period for ordinary unfair dismissal claims drops from two years' service to six months, and the current compensation limits are removed. That's the headline most people have heard. What gets blurred is that this change only applies to ordinary unfair dismissal.
Automatically unfair dismissal — dismissal connected to whistleblowing, pregnancy, or trade union activity, among other protected reasons — has always been a day-one right with no qualifying period, and the 2027 change doesn't touch it. Treating "unfair dismissal" as one single rulebook rather than two separate ones is one of the most common mistakes in employer guidance on this Act, and it matters most in exactly the disputes where getting it wrong is costliest.
The Fair Work Agency Isn't Hypothetical Anymore
The Fair Work Agency was established in April 2026, consolidating enforcement powers that used to sit across separate regulators into a single body — and it has real teeth: penalties of up to 200% of the underpayment or breach, capped at £20,000 per worker, with that penalty halved if the employer pays within 14 days of the notice. For a small business, a handful of affected workers can turn a paperwork gap into a five-figure bill fast. Recordkeeping — especially the six-year holiday record retention requirement that came in alongside it in April 2026 — is what determines how a Fair Work Agency inquiry actually goes for you.
Four Changes This Autumn That Most Guides Still Miss
Beyond the headline dates, several narrower changes land in October and through the rest of 2026 that rarely make the summary articles:
1. From 30 October 2026, the duty to prevent sexual harassment strengthens from taking "reasonable steps" to taking "all reasonable steps," and third-party harassment liability extends across protected characteristics (excluding marriage/civil partnership and pregnancy/maternity) — with tribunal compensation uplifts of up to 25% where an employer falls short.
2. The Two-Tier Code is reinstated for public sector outsourcing via amendments to the Procurement Act 2023, affecting terms for outsourced workers.
3. Consultation duties on tipping policy — requiring employers to consult workers and union reps and review tipping policies at least every three years — were expected in October but have slipped to later in 2026; if you take tips, this one is worth tracking rather than assuming it's settled.
4. The Adult Social Care Negotiating Body is expected to be established around October 2026, setting pay and terms for roughly 1.5 million care workers in England — relevant well beyond the care sector itself, since it's the first sector-wide Fair Pay Agreement body created under the Act.
Frequently Asked Questions
Q: My employee was dismissed in September 2026 — do they get the new 6-month tribunal deadline or the old 3-month one?
A: It depends on the exact "relevant date" transitional rule, which turns on when the dismissal (or other act complained of) occurred relative to 1 October 2026 — not when the claim is filed. Don't assume either way; confirm the specific date against current Acas guidance or with an employment solicitor before treating a claim as time-barred or in time.
Q: Does the Fair Work Agency replace HMRC's minimum wage enforcement team?
A: The Fair Work Agency, established in April 2026, brings together enforcement powers that were previously spread across different bodies into one agency with its own penalty regime — up to 200% of the breach amount, capped at £20,000 per worker, halved if paid within 14 days. Treat it as the single body you now need to be compliant with, not an extra layer on top of the old system.
Q: If the unfair dismissal qualifying period drops to 6 months in January 2027, does that mean any dismissal reason is fine after 6 months?
A: No. The 6-month qualifying period applies only to ordinary unfair dismissal. Automatically unfair reasons — whistleblowing, pregnancy, trade union activity, among others — have always been day-one rights with no qualifying period at all, and that doesn't change in 2027.
Where to Go From Here
The Employment Rights Act 2025 isn't a single compliance date you can tick off — it's a rolling timetable that runs from changes already live today through to 2027, and treating it as "done" after the last headline you read is how businesses get caught out. The UK Employment Rights Act 2025 Compliance Blueprint is built around that timetable directly: 29 chapters organised by exactly when each change takes effect, a master timeline tracker, a 15-scenario worked bank, and a full employer self-audit appendix — so you always know what's live, what's imminent, and what you can safely plan ahead for.
Get the UK Employment Rights Act 2025 Compliance Blueprint →
This article is for general educational purposes only and does not constitute legal advice. Employment law is changing rapidly under this Act, implementation dates and regulations are subject to further change, and this summary reflects the position as of the publication date above. Always verify current requirements against official government and Acas guidance, and consult a qualified employment solicitor before making decisions that affect your specific business or employees.