Yes. Article 16 of Directive (EU) 2023/970 expressly includes interest on arrears within the compensation or reparation that may be required after an equal-pay infringement. The Directive does not set one EU-wide interest rate or one calculation method. Those details are determined by the applicable Member State law. Interest matters because paying the correct amount years later does not fully restore a worker who was deprived of that money during the intervening period.
Jurisdiction: European Union
Check national interest rate and calculation rules
Interest Is Part of the Full-Reparation Principle
Article 16 requires compensation or reparation that is real and effective and that places the worker in the position they would have occupied without the infringement. It expressly lists interest on arrears among the elements of compensation. The logic is straightforward: a worker who should have received money earlier has lost the use of that money. Repaying only the principal amount years later may therefore leave part of the financial loss unaddressed. Interest helps make the remedy closer to full restoration.
The Directive Does Not Set One EU Interest Rate
Directive (EU) 2023/970 establishes the entitlement framework but does not prescribe a single percentage rate for all Member States. National law determines how interest is calculated, including the applicable rate, the date from which it accrues and whether different rules apply before and after judgment. Employers and workers should therefore avoid applying a rate taken from another jurisdiction or another type of debt without checking the relevant national rule.
Interest Can Become Material in Long-Running Pay Disputes
Pay discrimination can persist for years before it is identified. A worker may only become aware of a possible disparity after receiving information about average pay levels, reviewing a pay report or obtaining advice. Where the underlying back-pay amount covers a long period, interest can materially increase the total remedy. This is one reason employers should investigate credible pay concerns promptly. Delay can increase both the evidential difficulty and the financial value of a valid claim.
Interest Should Be Separated From the Principal Back Pay
For governance and calculation purposes, employers should distinguish the principal pay shortfall from interest, bonuses, payments in kind, lost opportunities and non-material damage. These are different components of the wider compensation framework. Separating them makes it easier to audit the calculation and explain how the total amount was reached. Payroll data normally establishes the principal amounts, while the applicable legal rule determines how interest is applied to those amounts.
Limitation Rules Still Matter
Article 21 sets minimum standards for limitation periods on equal-pay claims, including that the period cannot begin before the claimant is aware or can reasonably be expected to be aware of the infringement and that the limitation period cannot be shorter than three years. National law controls the detailed interaction between limitation periods, the recoverable claim period and interest. A valid interest calculation therefore requires both the compensation rule and the national procedural rule.
Employers Should Preserve Dates and Payment Histories
Interest calculations depend heavily on dates. Employers should be able to identify when each payment should have been made, what was actually paid and when any later correction occurred. Historical payroll records, bonus dates and contract changes may all be relevant. Where a settlement or corrective payment is made, the documentation should clearly identify what components are being resolved. Accurate payment histories reduce uncertainty and help prevent the same amount from being counted more than once.
Frequently Asked Questions
Does Article 16 mention interest?
Yes. It expressly includes interest on arrears within compensation or reparation.
What interest rate applies to an equal-pay claim?
The Directive does not set one EU-wide rate. The applicable Member State law determines the rate and calculation method.
Is interest the same as a penalty?
No. Interest is part of restoring the worker's loss, while Article 23 separately requires national penalties for infringements.
Related Guides
Official Sources
Requirements and practices differ by jurisdiction and organisation. Check current local law, official guidance and professional advice for a specific situation.