Time worked over existing employee working standards, as well as work carried out over extended daily working time resulting from the current system and decomposition of employee working hours for which the employee does not get a day off from work but receives additional remuneration.

Work performed during additional days off is work in overtime, if the employee was not given an extra day off at another time in lieu of the time worked. Overtime hours are divided into hours worked in a continuous working system and hours not worked in a continuous working system. Overtime hours resulting from a continuous working system are hours of the extended working time (for example, on Saturdays) and those hours in a continuous working system which in the case of incomplete crew on individual shifts fall on Sundays and legal holidays.

• Council Regulation (EC) No 530/1999 of 9 March 1999 concerning structural statistics on earnings and on labour costs
  Place of publication: (Dz. Urz. WE L 63 z 12.03.1999, str. 6-10, z późn. zm. – Dz. Urz. UE Polskie wydanie specjalne, rozdz. 5, t. 3, str. 341, z późn. zm.)

• Work time
• Time worked