The Supreme Court puts an end to “opaque pay slips” and strengthens pay transparency

The clarity of a pay slip is not exhausted by the mere listing of pay components.

In its judgment of 24 March 2026 (appeal no. 13/2025), the Supreme Court dismissed the ordinary appeal for cassation lodged by the Public Business Entity Renfe Operadora against the judgment of the Social Chamber of the National High Court of 16 September 2024. In doing so, it confirmed the obligation of the Renfe Group to clarify and break down variable pay items, arrears and incidents on pay slips, specifying the dates to which they relate and the days actually paid in fixed salary items.

The dispute originated in a collective conflict claim brought by the trade union Alternativa Ferroviària (ALFERRO), affecting the entire workforce of the Renfe Group, approximately 13,000 workers. The claim identified three specific shortcomings in the pay slips: with regard to monthly accrual items, the payslips showed the days actually accrued only when they related to the immediately preceding month, but not in the case of arrears; as regards items accrued over a period longer than one month, the payslips did not indicate the accrual period or whether payment was made in full or in part depending on possible contractual suspensions such as temporary incapacity or strike action; and as for functional supplements paid by days or hours, the payslip merely stated the code and the amount, without identifying the unit of time over which the entitlement accrued.

The insufficiency of the presentation before the joint committee.

Renfe argued that the pay slip model had been presented and agreed at the meeting of the Joint Committee of the Second Collective Agreement of the Renfe Group, which, in its view, placed it within the scope allowed by Article 29.1 of the Workers’ Statute for models agreed with workers’ representatives. The Supreme Court rejected this argument with precision: at that meeting there was merely an explanation or presentation by the company, with no evidence of the adoption of a formal agreement. In the absence of such an agreement, the applicable regulatory framework is reduced to Article 29.1 of the Workers’ Statute itself and the Ministerial Orders of 27 December 1994 and 6 November 2014.

Clarity in accrual, not only in the pay items.

The most significant contribution of the judgment lies in the distinction it draws between two obligations contained separately in Article 29.1 of the Workers’ Statute: the correct identification of pay components and the requirement of clarity. The first was met in Renfe’s payslips; the second was not. The Court recalls its earlier case law set out in Supreme Court Judgment 31/2019 of 17 January (appeal no. 200/2017), in which it had already rejected the idea that a worker could be required to carry out mathematical operations of a certain complexity in order to verify that they were receiving the correct pay. The principle of transparency that must govern the employment relationship requires that the payslip enable the worker to check the items paid and the calculation of each of them with minimal effort and without having to resort to data records that the employer has not expressly communicated.

The Court sets out two operational criteria that precisely define the required standard. First, the payslip must allow easy verification of the items paid and of the calculation and amount of each one, using the minimum number of mathematical operations. Second, it is not sufficient that the worker knows the data needed to verify their pay if the company has not expressly communicated that data on the payslip itself. Knowing the days of sick leave or strike action is not the same as those days being reflected on the payslip. The burden of cross-checking that information against the amount received does not fall on the worker.

From these two criteria the Fourth Chamber expressly draws the following conclusion: the company must include on the payslip those circumstances that make it possible to monitor the settlement carried out by the employer, without which the necessary clarity of the salary statement cannot be said to exist. This is not a generic obligation of transparency; it is an obligation to provide, on the payslip itself, the information that enables the worker to verify that what they are being paid is what they are entitled to receive.

The Court therefore rejects Renfe’s argument that the worker could carry out the necessary calculations on the basis of data which, although known to them, the company had not communicated on the payslip. That claim, the Chamber points out, shifts onto the worker the control activity that is the company’s administrative responsibility.

Consequences for business practice.

The judgment has implications that go beyond the specific case decided by the Supreme Court. Any company that uses its own pay slip model —or has negotiated one with workers’ representatives— must check that its payslips allow workers to verify the basis of the calculation with minimal effort and without resorting to external records. This is especially relevant for variable remuneration, functional supplements and the payment of arrears, where standard payslips tend to show only the amount without breaking down the accrual period or the calculation method.

It is not enough for that breakdown to be available on request or for the worker to be able to obtain it from other internal records. The obligation of clarity and transparency requires that the information appear on the payslip itself, including all the circumstances that make monitoring possible, without which the necessary clarity of the salary statement cannot be said to exist.