On May 14, the European Court of Justice (ECJ) has ruled (Case C-55/18) that all Member States must require employers to set up an objective, reliable and accessible system registering the effective daily working time per worker.

The European decision derives from a collective conflict originated in Spain. A union requested the employer to set up a system that would allow verifying whether workers worked overtime, and whether the employer complied with working time limitations, including health and safety resting time. Because the union argued that the obligation derives not only from Spanish legislation, but also from European law, the Spanish court requested a preliminary ruling on whether Directive 2003/88/CE on working time, and Directive 89/391/EEC on safety and health of workers, impose recording daily working time.

The ECJ’s decision has ruled that the referred Directives mandate setting up such system. In consequence, all Member States must require employers to set up an objective, reliable and accessible system registering the daily working time by each employee. Such registry is necessary to verify compliance with maximum daily and weekly working time, and with resting periods.

The ECJ’s judgement considers the following arguments:

  • The employer is in a position to dissuade workers, who are in a weaker position within the employment relationship, from requesting compliance with working time limits.
  • Workers, their representatives, and the employment inspectorate lack sufficient evidence sources of real working time, because:
    1. The recording of overtime does not guarantee that the workers fulfill maximum weekly working time and minimum resting periods, provided under the EU Directives.
    2. Other sources of evidence, such as witness statements, emails, or the consultation of mobile telephones or computers are not sufficient, either.
    3. Neither are sufficient the employment inspectorates’ powers to investigate and impose penalties.
  • A working time registry is an effective measure to obtain objective and reliable data on time actually worked and constitutes valid evidence.
  • The economic burden of setting up such a system cannot impede ensuring health and safety protection of workers.

In conclusion, Directive 2003/88 and Directive 89/391, preclude a law of a Member State that does not require employers to set up a system enabling measuring the duration of time worked each day by each worker. It falls on each Member State to determine the specific arrangements for implementing the system.

Spain just introduced a system, in force since May 12, requiring that all employers register the start and end of effective daily working time by employee. One of the core debates in Spain, if this can inspire thoughts for other countries, is how to keep this registry in step with flexible working time organization. In this sense, an essential issue is how to keep track of activities that workers perform between the start and the end of the daily work, but which are not “effective working time”, such as the use of personal phones for personal purposes, coffee breaks, lunch time, use of gym, and others. This raises the issue of whether self-statements are a valid system, the extent of the employer’s verification powers, GDPA requirements to use technology, the system’s reliability, etc.

We will use this communication channel for updates of the Spanish advances on this topic.



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Abogada especializada en derecho del trabajo, Lara Vivas ha llevado a cabo negociaciones colectivas, entre las que se incluye la negociación de convenios, mediación en conflictos colectivos y huelgas. Asimismo, ha participado en procesos de restructuración en derecho español y europeo. Ejerce de abogada en tribunales de primera y segunda instancia en España. Ha asesorado a empresas europeas, americanas y asiáticas en asuntos legales de modo continuado, así como a departamentos de Recursos Humanos para realizar análisis estratégicos de sus organizaciones, desde una perspectiva jurídica y de análisis económico del derecho.



11 artículos


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