Article 9 requires employers within the reporting scope to report the gender pay gap in complementary or variable components. A practical calculation follows the Directive's general gender-pay-gap logic: identify the complementary or variable pay included for the reporting period, calculate the average amount for female workers and the average amount for male workers, subtract the female average from the male average, divide the difference by the male average and express the result as a percentage. Employers should apply the exact national methodology required by the relevant Member State, because the Directive specifies the metric but does not set out a complete operational formula for every variable-pay data scenario.
Jurisdiction: European Union
Article 9 Requires a Separate Variable-Pay Gender Gap
The Pay Transparency Directive does not allow employers to rely only on one overall pay-gap percentage. Article 9(1)(b) separately requires the gender pay gap in complementary or variable components. This matters because differences in bonuses, commissions, allowances, incentives and other non-basic elements can produce a significant gender gap even where basic salary structures appear relatively balanced. The Directive therefore treats variable or complementary pay as a distinct reporting dimension. Employers should maintain a clear mapping of which pay elements fall into this category and should apply that mapping consistently across female and male workers and across reporting periods.
Start by Defining the Variable and Complementary Pay Dataset
Article 3 defines pay broadly. It includes ordinary basic or minimum wage or salary and other consideration, in cash or in kind, that a worker receives directly or indirectly from the employer in respect of employment. For reporting purposes, employers therefore need to identify which elements in payroll and reward systems are treated as complementary or variable components. Depending on the national reporting methodology, this may include bonuses, commissions, incentive payments, certain allowances, non-cash benefits or other additional remuneration. The data definition should be documented before the calculation is run so that the result is reproducible and comparable over time.
Calculate the Average Variable Pay for Women and Men
A practical approach is to calculate the average value of the relevant complementary or variable components separately for female and male workers in the reporting population. Once the two averages have been calculated, the difference can be expressed as a percentage of the male average, following the Directive's general definition of a gender pay gap. In formula form, this is commonly represented as: male average variable pay minus female average variable pay, divided by male average variable pay, multiplied by 100. Employers should treat this as an analytical expression of the Article 9 metric and should follow any more specific methodology required by national implementing law or official guidance.
Decide How Non-Recipients Are Treated Under the Applicable Methodology
One of the most important implementation questions is whether the average variable-pay calculation includes all workers in the reporting population with zero recorded variable pay for non-recipients, or only workers who received a relevant component. Article 9 separately requires the proportion of female and male workers receiving complementary or variable components, which shows that receipt itself is an important reporting dimension. The Directive does not set out every operational data rule in Article 9. Employers should therefore avoid inventing a treatment rule and instead follow the calculation instructions adopted in the relevant Member State. Whichever method applies should be documented and used consistently.
Use the Correct Reporting Period and Consistent Component Values
Article 9 reporting relates to the previous calendar year. Employers should therefore align variable-pay data to the same reporting period used for the rest of the Article 9 submission. This may require care where bonuses are earned in one year but paid in another, where commissions are adjusted after year end, or where non-cash benefits require valuation. National guidance may specify how such cases should be treated. Internal controls should record the source system, valuation basis, currency conversion where relevant, inclusion or exclusion decision and any adjustment made so that the reported result can be reconstructed later.
A Variable-Pay Gap Is a Diagnostic Metric, Not Proof of Discrimination
A reported variable-pay gender gap shows a difference in average outcomes between women and men. It does not by itself establish why that difference exists. The result may reflect workforce composition, participation in incentive plans, job level, hours, sales opportunity, performance outcomes or other factors. Some differences may be objectively explainable while others may require deeper review. Employers should therefore use the Article 9 metric as a signal for further analysis, especially when the gap is large, persistent or concentrated in particular categories of workers. Equal-pay obligations still require objective, gender-neutral explanations for relevant pay differences.
Keep a Reproducible Calculation Record
A defensible reporting process should preserve the worker population, included pay components, treatment of non-recipients, calculation logic, data corrections, review notes and final values. This is important because management must confirm the accuracy of Article 9 information after consulting workers' representatives, and worker representatives must have access to the methodologies applied. Reproducibility also helps when a later reporting cycle produces an unexpected movement in the gap. Rather than reconstructing the method from memory, the employer can compare the current result with the prior calculation and identify whether the change came from workforce composition, pay outcomes or methodology.
Frequently Asked Questions
Does Article 9 require a separate variable-pay gender gap?
Yes. Article 9(1)(b) separately requires the gender pay gap in complementary or variable components.
What is the basic calculation approach?
A practical approach compares average complementary or variable pay for female and male workers and expresses the difference relative to the male average, subject to the exact national methodology.
Does a variable-pay gap prove discrimination?
No. It identifies a difference in outcomes. Employers may need further analysis to determine the causes and whether any difference lacks an objective, gender-neutral justification.
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.