Is Pay Secrecy Legal in the UK?

For decades, many British workplaces treated pay as a private matter. It was considered impolite, even risky, to talk about how much you earned. Some employers went further, embedding pay secrecy clauses into contracts that explicitly forbade employees from sharing or discussing salary information.

But the legal and cultural climate has changed. Pay transparency is now central to conversations about equality and fairness. Laws such as the Equality Act 2010 were designed to expose hidden inequalities - particularly the gender pay gap - by protecting employees who talk about pay for legitimate reasons.

So where does this leave the traditional “don’t talk about pay” rule? Are employers still allowed to enforce confidentiality clauses, or has pay secrecy become a relic of the past?

The Shift from Secrecy to Transparency

The move towards openness didn’t happen overnight. Historically, pay confidentiality was seen as a way to maintain workplace harmony and prevent disputes. Employers often argued that secrecy reduced jealousy and protected sensitive commercial information.

However, decades of research revealed that secrecy often conceals inequality. Without transparency, it is almost impossible for employees to know whether pay differences are fair or discriminatory.

This was particularly significant in closing the gender pay gap. Women frequently discovered - sometimes years later - that they had been paid less than male colleagues for the same work, yet had been discouraged from comparing salaries.

In response, Parliament introduced section 77 of the Equality Act 2010, which transformed the legal landscape around pay discussions.

The Legal Position: Equality Act 2010, Section 77

Section 77 of the Equality Act 2010 makes clear that employers cannot enforce contractual terms that prevent or restrict employees from discussing pay if the purpose of that discussion is to find out whether discrimination has occurred.

The law describes this as a “relevant pay disclosure”. In plain English, it means that an employee is legally protected if they ask, share, or compare pay information to check whether a difference in pay might be linked to a protected characteristic - such as sex, race, disability, age, religion or belief.

This means:

• A “pay secrecy clause” is unenforceable insofar as it would prevent a relevant pay disclosure.
  
• An employer who disciplines, penalises, or dismisses an employee for such a discussion may face a claim for victimisation or unfair dismissal.
  

The law doesn’t require the employee to prove that discrimination actually occurred - only that the purpose of their discussion was to find out whether it might have.

What a Pay Secrecy Clause Looks Like

A pay secrecy clause might say something like:

“Employees must not discuss or disclose their pay or benefits with other staff or with anyone outside the company.”

Such clauses were once routine, especially in private-sector contracts. While employers can still protect genuinely confidential commercial information, section 77 ensures that such clauses cannot silence employees who are trying to establish whether pay is being applied fairly.

For example, if an employee suspects they are being paid less than a colleague of a different gender for the same role, the employer cannot lawfully rely on a pay secrecy clause to stop them asking about it.

Why the Law Protects Pay Discussions

The legal rationale is simple: you cannot challenge discrimination that you cannot see.
If employees are prevented from comparing pay, unlawful disparities remain hidden.

This was one of the central lessons of high-profile cases such as the long-running equal pay claims against large retailers like Tesco and Asda. Those cases showed that workers often only discovered years later that pay systems treated comparable roles differently based on gender or workplace structure.

By protecting pay discussions, section 77 empowers employees to identify possible discrimination early - ideally before it escalates to formal legal action.

What Counts as a Protected Discussion?

A pay conversation is protected if it meets two criteria:

1. It concerns pay or related terms (including bonuses, benefits, or allowances); and
   
2. The purpose is to determine whether a pay difference is related to a protected characteristic.
   

That means an employee can:

• Ask a colleague what they earn to check whether the difference might be discriminatory.
  
• Discuss pay disparities with colleagues or a trade union representative.
  
• Share their own pay information when raising a grievance about discrimination.
  

These are all relevant pay disclosures under the Equality Act. Employers must not treat such employees unfavourably - for example, by giving them poor appraisals, denying promotion, or dismissing them.

If they do, the employee may bring a tribunal claim for victimisation or unfair dismissal.

What Is Not Protected

The law does not create a free-for-all right to discuss or publish pay information in every circumstance.

Employers can still reasonably:

• Restrict the disclosure of confidential information to external parties, such as competitors or clients;
  
• Expect discretion where pay discussions have no link to discrimination; and
  
• Prevent malicious or reckless sharing of sensitive information, such as other employees’ personal data.
  

The Equality Act only protects discussions where the purpose is to explore possible inequality - not casual gossip or social comparison.

For instance, if two employees publicly post colleagues’ pay slips on social media for entertainment, their conduct would fall outside the protection of section 77. The employer could lawfully take disciplinary action in that scenario.

Equal Pay and Pay Discrimination: The Wider Context

Section 77 links closely to the equality-of-terms provisions in the Equality Act 2010. These give employees the right to equal pay with a comparator of the opposite sex performing equal work - defined as “like work”, “work rated as equivalent”, or “work of equal value”.

Pay discussions protected under section 77 often serve as the first step in identifying whether an equal pay claim might exist.

Employees who believe they are underpaid compared with a colleague of a different gender can request pay information, raise an internal grievance, or, if necessary, bring a claim before an Employment Tribunal.

The EHRC’s Code of Practice on Equal Pay and ACAS guidance both encourage transparency and urge employers to maintain clear, objective pay systems to minimise risk.

The Data Protection Dimension

Pay data is also personal data under the UK GDPR and Data Protection Act 2018. Employers remain data controllers and must handle salary information lawfully, fairly, and securely.

That means:

• Limiting access to those with a legitimate business reason;
  
• Avoiding unnecessary disclosure of identifiable pay data; and
  
• Responding appropriately to subject-access or equal-pay information requests.
  

However, these data-protection obligations do not override the Equality Act. Employers cannot cite GDPR as a reason to block employees from making relevant pay disclosures about potential discrimination.

The Broader Push Toward Transparency

Gender Pay Gap Reporting

Since 2017, UK employers with 250 or more employees must publish annual gender pay gap reports under the Equality Act 2010 (Gender Pay Gap Information) Regulations 2017.

This reporting obligation was introduced to shine light on structural pay differences rather than individual cases. Although it doesn’t identify specific salaries, it has created a new norm of openness around pay data and accountability.

Pay Transparency in Recruitment

The government and equality bodies such as the EHRC and ACAS have also advocated for salary ranges in job adverts. This growing “pay transparency movement” aims to reduce inequality by making pay expectations clear from the outset.

While not yet a legal requirement, many employers now voluntarily publish salary bands to attract talent and demonstrate fairness.

Consequences for Employers Who Get It Wrong

Employers who enforce unlawful pay secrecy or retaliate against employees for protected pay discussions face serious risks:

• Victimisation claims under the Equality Act 2010;
  
• Unfair dismissal if an employee is dismissed for asserting their right to discuss pay;
  
• Damages and injury-to-feelings awards; and
  
• Reputational harm, especially where equality or diversity issues are involved.
  

Tribunals can order compensation for both financial loss and emotional distress, and findings are publicly available - which can have commercial and reputational implications far beyond the award itself.

Example: When Secrecy Crosses the Line

Maya and Tom are both account managers. They perform the same duties, but Maya suspects Tom earns more. Their contracts contain a clause forbidding pay discussions.

When Maya raises the issue informally, her manager reprimands her and warns that further discussion could lead to disciplinary action.

Later, Maya discovers that Tom, who is male, earns 10% more. She brings a claim for sex discrimination and victimisation.

Under section 77 of the Equality Act, the pay secrecy clause is unenforceable in this context. Maya’s conversation was a relevant pay disclosure, and any detriment - even a threat of discipline - can amount to unlawful victimisation.

Best Practice for Employers

Modern employers should aim for transparency with responsibility. Here are practical steps to achieve that balance:

1. Audit contracts and policies - Remove or revise pay secrecy clauses. Use wording that preserves confidentiality only for legitimate business reasons.
   
2. Adopt transparent pay structures - Clear job grades, salary bands, and objective criteria reduce disputes.
   
3. Train managers - Ensure line managers understand the limits of confidentiality and how to respond lawfully to pay discussions.
   
4. Consult HR and legal teams - Review how pay is determined and benchmarked to avoid inadvertent discrimination.
   
5. Comply with gender pay gap reporting - Publish accurate, timely data and act on findings.
   
6. Follow data-protection best practice - Handle salary data lawfully and securely, in line with ICO guidance.
   

By promoting fairness and transparency, employers not only comply with the law but also foster a culture of trust and inclusion.

Conclusion

Pay secrecy is not entirely illegal in the UK, but its legal reach has shrunk considerably. Employers can still expect professionalism and discretion, but they cannot prevent employees from discussing pay to uncover discrimination.

Section 77 of the Equality Act 2010 protects those conversations and renders contrary contract terms unenforceable. Employers who ignore this risk legal action and damage to their reputation.

As the workplace moves towards greater transparency - from gender pay gap reporting to open salary frameworks - secrecy looks increasingly outdated. For most businesses, transparency isn’t just a legal safeguard; it’s a competitive advantage.

How Sprintlaw Can Help

Sprintlaw’s employment lawyers assist UK businesses with compliance, contract drafting, and workplace equality. Get in touch with us today to make sure your pay practices are fair, compliant, and aligned with modern employment law. You can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.