Art. 125. [legal definition and length of night work ]
(1) The work performed between 22:00 and 06:00 hours shall be considered night work.
(11) A night employee is, as the case may be:
a) an employee performing night work at least three hours of his/her daily working time;
b) an employee performing night work amounting to at least 30% of his/her monthly working time.
(2) The normal length of the working time, for the night employee, shall not exceed an average of 8 hours a day, calculated over a reference period of maximum three calendar months, in compliance with the legal provisions on the weekly rest period.
(21) The normal length of the working time, for the night employees whose activity takes place in special or distinct working conditions, as established according to the legal provisions, shall not exceed eight hours within any 24 hour period during which they perform night work.
(3) An employer frequently using night work shall notify the territorial labour inspectorate thereof.