The allocation of the working hours shall be established by the internal rules of the enterprise ().
In enterprises where the work organisation allows that, flexible working hours may be established. The time during which the employee must be at work in the enterprise, as well as the manner of accounting for it, shall be specified by the employer. Beyond the time of his/her compulsory presence, the employee may determine the beginning of the working hours himself/herself (). In the cases of established flexible working hours, beyond the time for obligatory presence, the worker or employee may work the un-worked day working time in the following or other days of the same working week. The way of reporting the working time shall be laid down in the Internal Rules of Procedure of the enterprise (). Depending on the nature of the work and the work organisation, the working day may be divided into two or three parts (). For some categories of employees, due to the specific nature of the work, an obligation may be established to be on duty or to stand by at the disposal of the employer during specified hours in a 24-hour period. The categories of employees, the maximum duration of the hours, and the terms and procedures for reporting them shall be determined by the Minister of Labour and Social Policy ().