Equal Pay Claim Limitation Period Rules

Equal pay claims are brought where an employee believes they are receiving less pay than a comparator of the opposite sex doing equal work. These claims arise under the Equality Act 2010 and are a key mechanism for addressing pay discrimination in the workplace.

Although equal pay rights can extend over long periods of employment, the ability to bring a claim is subject to strict limitation rules. These time limits determine how far back a claimant can recover pay and the deadline for issuing proceedings in the Employment Tribunal.

This article explains the limitation period rules for equal pay claims, how time is calculated, how ongoing discrimination affects deadlines, and the impact of Employment Tribunal procedures including ACAS Early Conciliation.

What Is an Equal Pay Claim?

An equal pay claim arises when a person believes they are not receiving equal pay compared to a colleague of the opposite sex who is performing:

• Like work
• Work rated as equivalent under a job evaluation scheme
• Work of equal value

Equal pay claims focus on contractual pay terms, which are automatically modified by equality law to ensure non-discriminatory pay structures.

Typical claims involve:

• Basic salary differences
• Bonus disparities
• Pension contributions
• Allowances or benefits
• Pay progression inequalities

Time Limit for Equal Pay Employment Tribunal Claims

The standard time limit for bringing an equal pay claim is:

Six months less one day from the end of employment.

However, equal pay claims are different from most Employment Tribunal claims because they often involve continuing breaches during employment.

Equal Pay as a Continuing Claim

Equal pay claims are generally treated as a continuing cause of action.

This means:

• Each underpayment of wages creates a fresh breach
• The limitation period can extend over time
• Claims can cover up to six years of back pay (subject to rules)

Key principle

As long as the unequal pay continues, the claim remains “live” and is not restricted to a single incident.

Back Pay Limitation Period

While a claim may be brought during employment or within six months of leaving, recovery of historic pay is limited.

The general rule:

• A claimant can usually recover up to six years of arrears of pay
• This is often referred to as the “back pay period”

This reflects the contractual nature of equal pay claims, even though they are brought under discrimination law.

When Does Time Start Running?

Time can start running from different points depending on the circumstances:

1. During employment

• Each discriminatory pay packet creates a fresh breach
• Time effectively resets with each underpayment

2. After employment ends

• The limitation period runs from the end of employment
• Claims must usually be brought within six months of termination

The “End of Employment” Rule

The key trigger for limitation purposes is the end of employment relationship.

This may be:

• The effective date of termination (EDT)
• Expiry of notice period
• Resignation date (including constructive dismissal cases)

Once employment ends, the claimant must act within the six-month window to preserve tribunal rights.

ACAS Early Conciliation and Equal Pay Claims

Before bringing an equal pay claim, most individuals must contact ACAS for Early Conciliation.

This process:

• Stops the limitation clock
• Extends the deadline by the conciliation period
• Resumes once ACAS issues a certificate

Practical effect

If Early Conciliation lasts 30 days, the six-month limitation period is extended by 30 days.

This can be critical where claims are close to expiry following termination.

Comparison with Other Discrimination Claims

Equal pay claims differ from other Equality Act claims:

Claim type	Time limit	Key feature
Equal pay	6 months from end of employment	Continuing breach possible
Other discrimination	3 months less one day	Discrete acts or continuing acts

Equal pay claims are therefore often more financially significant due to longer back pay recovery.

Extension of Time in Equal Pay Claims

Tribunals have limited discretion to extend time in equal pay cases. Extensions are generally only allowed where:

• It was not reasonably practicable to present the claim in time (post-employment claims), or
• The claim is part of an ongoing employment relationship where breaches continue

However, unlike discrimination claims, equal pay law is more structured around continuing pay inequality rather than discretionary extension.

Common Limitation Issues in Equal Pay Cases

1. Delay after leaving employment

Many claimants delay bringing claims after resignation or dismissal, risking loss of tribunal jurisdiction.

2. Misunderstanding continuing breach

Some assume each payslip is a separate claim without recognising limitation consequences after employment ends.

3. Comparator disputes

Identifying a valid comparator may take time, but delay does not stop limitation periods running.

4. Complex pay structures

Bonus schemes and allowances can make it difficult to identify the exact point of breach.

Why Time Limits Are Strict

Time limits in equal pay claims exist to:

• Ensure payroll evidence remains reliable
• Provide certainty to employers and public bodies
• Prevent indefinite financial liability
• Encourage timely resolution of pay inequality disputes

Because equal pay claims can involve large back pay sums, tribunals enforce limitation rules carefully.

Practical Steps When Considering a Claim

Typical steps include:

• Identifying a valid comparator of the opposite sex
• Reviewing pay structures and contracts
• Gathering payslips and bonus records
• Establishing whether equal work is being performed
• Calculating the end of employment date
• Starting ACAS Early Conciliation promptly
• Estimating potential back pay recovery period

Early analysis is essential due to both limitation rules and evidential complexity.

Common Questions from our Readers

What is the time limit for equal pay claims?

Six months from the end of employment, with ongoing breaches potentially continuing during employment.

How far back can I claim unpaid equal pay?

Usually up to six years of back pay.

Does ACAS Early Conciliation extend the time limit?

Yes, it pauses and extends the limitation period for tribunal claims.

Can I bring an equal pay claim while still employed?

Yes, equal pay claims can be brought during employment as ongoing breaches.

What happens if I miss the six-month deadline?

The claim will usually be time-barred unless exceptional circumstances apply.

Key Takeaways

Equal pay claims operate under a distinctive limitation framework. While the formal time limit is six months from the end of employment, ongoing pay inequality during employment means breaches are often treated as continuing.

Claimants may recover up to six years of back pay, but must act quickly after employment ends to preserve tribunal rights. ACAS Early Conciliation pauses the limitation period, but delay after termination can result in claims becoming time-barred.

Understanding comparator selection, pay structure analysis, and termination timing is essential to preserving equal pay claims.