This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Explanation of the difference between the gender pay gap and equal pay claims under UK employment law, including legal rights under the Equality Act 2010, tribunal claims, employer reporting duties, and how pay discrimination is assessed in England and Wales.
The gender pay gap and equal pay claims are often confused, but they address different legal and statistical issues within workplace pay in England and Wales.
Equal pay is a legal right under the Equality Act 2010, allowing individuals to challenge unequal pay for equal work. The gender pay gap, by contrast, is a statistical measure of overall pay differences between men and women within an organisation or across the labour market, rather than a legal claim.
Understanding the distinction is important for employees, employers, solicitors, and anyone assessing workplace pay fairness.
Legal Framework for Equal Pay
Equal pay law is governed primarily by the Equality Act 2010, which implies a sex equality clause into every employment contract. This ensures that men and women doing equal work must receive equal pay unless a lawful justification exists.
Equal work is defined as:
- Like work: similar or broadly similar roles
- Work rated as equivalent: jobs assessed as equal under a job evaluation scheme
- Work of equal value: different roles of equal worth in terms of skill, effort, and responsibility
Equal pay covers more than salary. It includes bonuses, overtime, pension contributions, allowances, and contractual benefits.
Equal pay claims are typically brought in the Employment Tribunal and require comparison with a real person of the opposite sex doing equal work.
What an Equal Pay Claim Is
An equal pay claim is a legal action brought by an individual alleging they are paid less than a comparator of the opposite sex for equal work.
To succeed, the claimant must generally show:
- They are doing equal work under the Equality Act 2010 definition
- A comparator of the opposite sex is paid more
- The pay difference relates to contractual terms
The employer can defend the claim by showing a material factor that is not related to sex, such as skills, experience, or market conditions, provided it is objectively justified.
Equal pay claims can result in:
- Back pay (arrears of pay differences, often covering several years)
- Adjustment of ongoing pay
- Tribunal declarations confirming equal terms
- Interest on unpaid sums
What the Gender Pay Gap Is
The gender pay gap is not a legal claim. It is a measurement of the difference in average earnings between men and women across:
- An organisation
- A sector
- The wider economy
It is usually expressed as a percentage difference between average hourly earnings.
The Equality and Human Rights Commission explains that it is a statistical indicator, not a comparison of individuals doing equal work.
For example, a company may have a gender pay gap because:
- More men are in senior or higher-paid roles
- Women are more represented in part-time roles
- Certain departments have different pay structures
Key Legal Difference
The core distinction is:
- Equal pay: legal right for individuals doing equal work
- Gender pay gap: organisational-level statistic about average pay differences
Legal guidance confirms that equal pay applies where men and women perform the same, similar, equivalent, or equal-value work, while the gender pay gap simply compares average earnings without assessing job equivalence.
How Each System Works in Practice
Equal Pay Claims Process
Equal pay claims involve a structured legal process:
- Identify a comparator of the opposite sex
- Show equal work (like work, equivalent work, or equal value)
- Demonstrate a pay disparity
- Allow employer to present a material factor defence
- Tribunal determines outcome
Claims are brought in the Employment Tribunal and can include significant historic arrears.
Gender Pay Gap Reporting
Gender pay gap reporting applies to UK employers with 250+ employees under specific regulations.
It requires publication of:
- Mean and median gender pay gap
- Bonus gap
- Proportion of men and women receiving bonuses
- Distribution across pay quartiles
It does not assess whether individual employees are underpaid or discriminated against. Instead, it highlights structural pay patterns.
Why the Two Are Often Confused
Confusion arises because both involve “pay differences between men and women”, but they measure different things:
- Equal pay concerns comparative fairness between two individuals doing equal work
- Gender pay gap concerns overall workforce averages
A company can comply with equal pay law but still have a gender pay gap due to workforce composition (for example, fewer women in senior roles).
Interaction With Discrimination Law
Equal pay claims sit within the Equality Act 2010 framework but are distinct from:
- Sex discrimination claims
- Indirect discrimination claims
- Victimisation and harassment claims
However, issues may overlap where pay structures reflect broader discriminatory practices affecting progression or job allocation.
Employer Defences and Common Justifications
Employers may lawfully explain pay differences using:
- Market rate pressures
- Different experience or qualifications
- Performance-based pay systems
- Seniority or length of service
- Organisational restructuring or legacy pay systems
Tribunals assess whether these reasons are genuine and not indirectly discriminatory.
Practical Implications for Workers
Where pay concerns arise, individuals commonly:
- Review payslips and contracts
- Compare roles and responsibilities with colleagues
- Request pay information through formal processes
- Raise internal grievances
- Consider ACAS Early Conciliation before tribunal action
Where concerns relate to overall organisational inequality rather than individual underpayment, gender pay gap reports may provide context but do not establish a legal claim.
Key Differences Summary
- Equal pay is enforceable law under the Equality Act 2010
- Gender pay gap is a statistical reporting measure
- Equal pay requires a comparator doing equal work
- Gender pay gap uses average earnings across groups
- Equal pay claims can result in compensation
- Gender pay gap reporting does not involve compensation
Final Thoughts
Equal pay law and gender pay gap reporting serve different purposes within UK employment law. Equal pay focuses on legal entitlement between individuals doing equal work, while the gender pay gap reflects broader structural pay differences across organisations.
Understanding this distinction is essential when assessing workplace pay fairness, identifying potential legal claims, or interpreting employer pay data.
