The Joint Pay Assessment Under the EU Pay Transparency Directive: The Obligation That Cannot Bite Until December 2027

Most discussion of the EU Pay Transparency Directive has settled on the part employers notice first: salary ranges in job adverts, and the end of asking candidates what they currently earn. That is Article 5, we cover it separately in our guide to pay transparency in job adverts, and it is the least consequential part of the Directive.

The mechanism that will actually change behaviour is Article 10, the joint pay assessment. It is the only part of Directive (EU) 2023/970 that compels an employer to sit down with workers' representatives and account for a pay gap it has been unable to explain. And because of how the reporting timetable works, it cannot be triggered against anyone until the end of 2027.

What Article 10 actually requires

A joint pay assessment becomes mandatory only where three conditions are met together. All three, not any one:

• the employer's pay reporting shows an average difference in pay between female and male workers of at least 5% in any category of workers;
• the employer has not justified that difference on the basis of objective, gender-neutral criteria; and
• the employer has not remedied the unjustified difference within six months of the date of submission of the pay reporting.

The structure rewards doing something. An employer that identifies a 5% gap, cannot explain it, and fixes it inside six months never reaches Article 10 at all. The obligation is triggered by inaction rather than by the gap itself, which is a meaningfully different incentive from a reporting duty that simply exposes a number.

The assessment is carried out jointly with workers' representatives. It is not an internal review that representatives are later shown, and an employer that commissions a consultant's pay audit and circulates the findings has not performed Article 10.

What goes in it, and who gets to see it

Article 10(2) sets out the required content, which runs across seven paragraphs. In substance the assessment must cover the share of women and men in each category of workers, average pay levels by sex, the reasons for any gaps, the measures intended to close those that are unjustified, and an evaluation of whether earlier measures actually worked.

That last element is the one employers underestimate. An assessment that proposes measures without evaluating what was tried before is incomplete on its face, and the requirement effectively creates a running record across cycles.

Distribution is wide. The assessment must be made available to workers and their representatives, communicated to the monitoring body, and provided to the labour inspectorate and the equality body on request. Under Article 10(4), unjustified differences must then be remedied within a reasonable period, in close cooperation with workers' representatives.

Why nothing can happen before December 2027

Article 10 depends on Article 9 pay reporting, and Article 9 phases in by employer size:

• 250 or more workers — first report by 7 June 2027, annually thereafter;
• 150 to 249 workers — first report by 7 June 2027, then every three years;
• 100 to 149 workers — first report by 7 June 2031, then every three years;
• fewer than 100 workers — voluntary, though Member States may require reporting under national law.

Work the arithmetic through. The earliest reporting submission is 7 June 2027. The six-month remedy window in Article 10(1) runs from the date of submission. So the earliest point at which any employer in the European Union can be in breach of the joint pay assessment obligation is around December 2027, and for employers in the 100 to 149 band it is late 2031.

Two conclusions follow, and they pull in opposite directions. Nobody needs to perform a joint pay assessment yet. But the data that will trigger one is being generated now, because the first report in June 2027 describes a period that is already running. An employer discovering an unexplained 5% gap for the first time in mid-2027 has six months to fix something it has had years to see.

Article 18 is where the Directive gets its teeth

This is the provision that converts a set of administrative duties into litigation risk, and it is routinely left out of employer briefings.

Article 18(1) states the general rule familiar from existing equality law: once a worker presents facts from which direct or indirect pay discrimination may be presumed, it falls to the respondent to prove that no discrimination occurred.

Article 18(2) goes considerably further. Where an employer has failed to comply with the obligations in Articles 5, 6, 7, 9 or 10, the burden of proving that there was no discrimination falls on the employer. The failure to comply is itself what shifts the burden. There is one exception: the reversal does not apply where the employer demonstrates that the breach was manifestly unintentional and minor. Article 18(5) excludes criminal proceedings unless national law provides otherwise.

Read that against Article 7. A worker has the right to request, in writing, information on their own pay level and on average pay levels broken down by sex for categories of workers doing the same work or work of equal value. Requests may be made through workers' representatives or an equality body. The employer must respond within a reasonable period and in any event no later than two months. Separately, under Article 7(3), employers must inform all workers annually of this right and how to exercise it.

An employer that misses the two-month deadline, or that never sends the annual notification, has breached Article 7. Under Article 18(2), that breach alone shifts the burden of proof in any subsequent equal pay claim. A missed administrative deadline becomes an evidential handicap in litigation about something else entirely.

Penalties

Article 23 requires Member States to lay down rules on penalties that are effective, proportionate and dissuasive, and to notify the Commission of them. Penalties must have a real deterrent effect and may include fines set under national law. Aggravating and mitigating factors must be taken into account, and the Directive specifically names intersectional discrimination among them. Article 23(4) requires specific penalties for repeated infringements.

The quantum is therefore national rather than European, which means the exposure in any given Member State is not determinable from the Directive itself.

Where Ireland sits

The transposition deadline under Article 34(1) was 7 June 2026. Member States were also required to give the Commission a summary of the impact assessment on employers with fewer than 250 workers, together with a reference to where it is published.

Ireland was unusual in starting from a reasonably advanced position. The Gender Pay Gap Information Act 2021 already delivers a substantial part of what Article 9 requires, which is why the Irish debate has concentrated on the elements that were not already in place — salary ranges in advertisements and the prohibition on pay history questions among them. Those sat in the General Scheme of the Equality (Miscellaneous Provisions) Bill 2024, which was referred for pre-legislative scrutiny and whose scrutiny report was published in October 2025. Anyone relying on the Irish position for a specific obligation should check the current legislative status directly rather than take a secondary account of it, including this one.

What does not depend on transposition timing is the reporting arithmetic. The June 2027 date sits in the Directive, and the pay data it will describe is being accumulated under whatever national rules apply in the meantime.

What this means in practice

The Directive rewards employers who can explain their pay structures and penalises those who cannot, which makes the real preparation work definitional rather than administrative. Categories of workers doing work of equal value have to be defined before any gap can be calculated within them, and the objective, gender-neutral criteria that would justify a difference have to exist in writing before a 5% gap appears rather than after.

This is recognisably the same discipline that gender pay gap reporting already demands, and the lessons from markets where it has been running longer transfer directly — see our guides to gender pay gap reporting and action planning and to ethnicity and disability pay gap reporting. The underlying discrimination framework is unchanged: the Employment Equality Acts grounds and the obligation to provide reasonable accommodation continue to operate alongside the Directive, and for public bodies the planning duty under section 42 of the IHREC Act provides a natural place to record the work.

Our suggestions

Three things to do now rather than in 2027. Define your categories of workers doing work of equal value, because every number the Directive asks for is calculated inside those categories and a boundary drawn after the gap is known looks exactly like what it is. Write down the gender-neutral criteria you would rely on to justify a difference, because Article 10 asks you to have justified a gap, not to be capable of justifying it. And put the Article 7 mechanics in place early — the annual notification and a two-month response process — because the cheapest breach in the Directive is also the one that reverses the burden of proof.