How union access reform is reshaping employer exposure on gender pay gaps

There are some big changes coming to UK workplaces regarding pay gaps.  As you are probably aware equality action plans will become mandatory from April 2027.  Mandatory means more than publishing a number, it means setting out what you're actually doing about it.

But there is one other change that hasn't gained as much attention, but will have a big impact on UK workplaces.  From April 2026, the bar for statutory union recognition dropped. Unions no longer have to show a majority of a bargaining unit is likely to support them before triggering the process, a simple majority of votes cast is now enough, and the old 40% turnout requirement is gone. From October 2026, unions gain a new legal right to request access to workplaces to meet, support, recruit and organise workers, whether or not that employer has ever dealt with a union before.

In addition to that, employment tribunal time limits are set to double, from three months to six, from October 2026, giving unresolved grievances twice the runway to turn into a claim. Meanwhile the maximum protective award for collective consultation failures has already doubled to 180 days' pay, a clear signal of where financial risk is heading across the Act more broadly. These three things changes, show a sequence of events that could happen if you don't prepare yourselves. 

Recognition gets easier, a union rep can walk into a workplace that's never had one, that rep now has a legal right to ask about pay, mandatory pay gap action plans give them a specific document to interrogate, not just a headline number and longer tribunal windows mean any friction that follows has far more time to harden into a formal claim. In short: easier access, harder questions, longer exposure.

What this means in practice

If you're an employer or HR leader: Don't wait for a union rep or a tribunal claim  to be the first person asking why your gender pay gap looks the way it does. Audit your pay gap narrative now. Know the "why" behind the numbers, not just the number itself. A published gap with no credible explanation is no longer just a reputational soft spot; it's a specific, foreseeable trigger for both union organising and litigation on pay gap issues.

If you're an employee, or union-curious: Your leverage is changing. You'll have longer to raise a claim, and — if your workplace doesn't already have a union — the door to getting one recognised is opening wider than it's been in years. Understanding your own organisation's pay gap action plan (once mandatory) gives you a concrete document to point to, not just a vague sense that something's off.

The engagement blind spot

Most organisations still measure employee engagement through an annual survey and treat pay gap reporting as a once-a-year compliance moment. Neither was built for a world where a union can request workplace access almost on demand, and pay gap plans are a standing, document rather than an annual snapshot. Poor engagement scores, an unexplained pay gap, and easier union access increase the risk of pay gap problems surfacing if you are taking no/limited action. 

What could happen in 2027/28?

By this time next year, expect the first wave of union-initiated pay transparency disputes brought under the new access rights,  not generic pay claims, but disputes explicitly built around an employer's own published pay gap action plan being used against it as evidence.

Organisations that get ahead of their own numbers now will look proactive.