In Federación de Servicios de Comisiones Obreras (CCOO) v Deutsche Bank SAE, a trade union in Spain brought a claim against Deutsche Bank, which did not keep a record of the hours its employees worked on a daily basis. The Court of Justice of the European Union has decided that if there were no requirement to keep records “it would be impossible to determine objectively and reliably either the number of hours worked by the worker [or] when that work was done”.