The Supreme Court requires companies to provide detailed payroll calculations

What happened?

The Social Chamber of the Supreme Court has issued ruling 285/2026, dated March 24, which requires companies to provide a detailed breakdown of payroll calculations. The High Court has been clear: it is not enough to simply pay the salary or list its components; companies must explain how each item on the payslip was calculated.

The case arose from a class-action lawsuit filed by the ALFERRO union against the Renfe Group. The collective dispute affected approximately 13,000 employees of various professional categories within the Renfe Group workforce. Renfe appealed to the Supreme Court, but the ruling confirmed what the National Court had already established: its payrolls were not sufficiently clear.

 

What changes from now on

Until now, many companies believed they were complying with the law simply by including compensation items on the payroll. The Supreme Court says that's no longer enough.

The judges are making a substantive, rather than a formal, interpretation of Article 29.1 of the Workers' Statute. Simply listing items or using the official template is insufficient. It is essential to detail calculations, explain accrual bases, and indicate the corresponding periods.

Specifically, the Court detected three common problems in the payroll model analyzed:

• In the arrearsIt was not specified to which period the paid days corresponded.
• In the concepts of accrual exceeding one monthIt was not indicated whether the payment was in full or partial due to absences, strikes or other incidents.
• In the supplements by day or hourOnly the key and the amount were collected, without explaining the unit of calculation.

 

Who is affected?

This ruling has a direct impact on all companies with employeesbut especially in those with:

• Variable compensation or functional supplements
• Workers with temporary disabilities (sick leave or accident leave)
• Outstanding salary arrears or adjustments
• Irregular working hours, reductions or extensions

Why is this important for workers?

The payslip must provide the employee with enough information to understand how the amounts being paid have been calculated, without requiring any additional consultations or calculations. 

The Supreme Court expressly rejects the notion that the employee should have to perform the calculations themselves. It rejects the possibility of shifting the burden of reconstructing their salary calculation onto the employee using data external to the payslip, considering this incompatible with the principle of transparency and the diligence required of the employer.

Furthermore, the existence of computer applications for the employee to check incidents does not exempt the company from its obligation to provide clear and detailed pay slips from the beginning, since that implies transferring to him the responsibility of requesting clarifications. 

 

What should companies do now?

Companies should review their payroll models and ensure they include:

• He period to which it corresponds each variable concept or delay
• The days actually paid when the amount depends on presence or activity
• The percentages or bases applied to calculate complements
• The incidents that have reduced or modified the accrual (IT, strike, unpaid leave, sanctions…)

Payroll management cannot be treated as just another administrative task. Transparency is no longer optional; it is an obligation, and its effective implementation requires technical knowledge and professional experience. 

 

What does non-compliance entail?

A payroll that does not meet these requirements can lead to individual claims or collective disputes. From an evidentiary standpoint, an unclear payroll weakens the company's position in any disagreement regarding variables, back pay, deductions, or social security contributions.

 

Do you have doubts about whether your payrolls comply with regulations?

At our consultancy in Cieza, we review your company's payslip templates and help you adapt them to the new standards required by the Supreme Court. Contact us and avoid problems before they arise.