Equal pay and pay transparency in the United Kingdom
Reviewed by Mellow Editorial Team, HR & payroll content team
Equal pay and pay transparency are not the same thing, though they are closely linked. Equal pay is a legal right — employees doing equal work must receive equal pay regardless of sex. Pay transparency is a set of practices (some voluntary, some increasingly expected) that help employers demonstrate they are meeting that obligation and build broader trust in how pay decisions are made.
What equal pay actually means in law
The Equality Act 2010 gives every employee the right to equal pay for equal work compared with a colleague of the opposite sex. "Equal work" covers three situations: like work (the same or broadly similar job), work rated as equivalent under a job evaluation scheme, and work of equal value (different jobs assessed as comparable in terms of skill, effort and decision-making).
If a pay gap exists between a man and a woman doing equal work, the employer must show a genuine material factor that justifies the difference — for example, a longer tenure, a skills shortage in the market when someone was hired, or a formal performance-related pay scheme that is applied consistently. The burden of proof shifts to the employer once a claim is brought.
Equal pay law covers not just basic salary but contractual terms more broadly: bonuses, overtime rates, allowances, holiday entitlement and sick pay. An employee can bring an equal pay claim in an employment tribunal up to six years after the breach in England and Wales (five years in Scotland). Claims can be costly and reputationally damaging, so getting the underlying pay structure right is worth doing proactively.
Gender pay gap reporting
Since 2017, employers with 250 or more employees have been required to publish gender pay gap data annually. The figures show the difference in average hourly pay and bonus pay between men and women across the whole organisation — not a comparison of individuals doing the same role. A gender pay gap is therefore not the same as an equal pay breach, but a wide gap may indicate structural issues worth investigating.
Smaller employers are not currently required to report, though many choose to do so voluntarily. The Employment Rights Act 2025 signals a broader direction of travel toward greater workplace transparency, and the government has indicated an intention to extend reporting obligations over time. Staying ahead of likely requirements is sensible.
Pay transparency as a practical tool
Beyond legal compliance, pay transparency refers to how openly an organisation communicates its pay structures, ranges and decision-making criteria. This sits on a spectrum:
Salary bands shared internally. Telling employees which band their role sits in and what drives progression within it. This reduces the information asymmetry that tends to disadvantage women, ethnic minority employees and those less comfortable negotiating.
Salary ranges in job adverts. Advertising a pay range for a vacancy. Several EU member states now require this under the EU Pay Transparency Directive (which does not apply in the UK post-Brexit), but many UK employers are adopting it regardless because it shortens hiring cycles and attracts candidates who are more likely to accept an offer.
Narrative alongside data. Publishing a gender pay gap report without any explanation of the figures is a missed opportunity. A clear, honest account of what is driving the gap and what concrete steps are being taken to address it carries far more weight with employees and the public than raw numbers alone.
None of these measures requires publishing every individual's salary, which most organisations — and most employees — would find uncomfortable.
Running pay reviews that reduce risk
A structured pay review is the most reliable way to identify and address equal pay issues before they become claims. The process typically involves:
1. Mapping roles to a consistent framework. Whether that is a formal job evaluation scheme or a simpler grading structure, the aim is to group roles that are genuinely comparable.
2. Analysing pay by protected characteristic. Look at gender, but also ethnicity, disability status and age where data allows. Unexplained gaps within the same grade are the signals to investigate.
3. Documenting the rationale for differences. Where a genuine material factor exists, record it clearly. "He's always been paid more" is not a genuine material factor.
4. Setting a realistic remediation timetable. Correcting historic underpayment rarely happens overnight, but a documented plan with milestones demonstrates good faith.
For employers running payroll across multiple countries, pay equity analysis needs to account for different local structures while still maintaining a consistent approach to fairness at the organisational level.
Handling pay conversations with employees
Employees have the right to discuss their pay with colleagues to establish whether there is a pay inequality — you cannot contractually prohibit this. A pay secrecy clause that prevents such discussions is unenforceable where the purpose is to identify potential discrimination.
This means the most effective response to pay questions is not confidentiality but clarity: a well-designed pay structure with transparent criteria gives employees a framework for understanding their pay, which tends to reduce both grievances and speculation. Where someone raises a concern, take it seriously, investigate it properly and respond in writing.
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