Premiums are calculated by reference to the basic salary of the employee, by reference to an hourly basis using 174 hours for a full-time monthly (Mt 139). Collective agreements may change the rate of such premiums, up or down, but employment contracts may not derogate in a direction more favorable to the employee.

For employees whose regular schedule includes Sunday, the premium for Sunday work is 50% of the basic wage (Mt 140).

The premium for a day of the weekend (Saturday or Sunday) or public holiday is equal to 100% of the basic wage. This premium is also paid for Easter Sunday, Whit Sunday, or if the working holiday falls on a Sunday. Time worked must of course also be paid.

These premiums are also due to people on shift work, on call, employees of trade including the tourist trade.

However, no premium is due for an employee working in companies subject to continuous service even on Sunday, for seasonal work, for part-time employees assigned exclusively to work on Sundays and holidays.

A night shift premium of 30% is granted to employees whose start time of work varies regularly and for time worked from 6 pm (18:00) to 6 am (06:00) (MT 141). This relates to people in particular to those whose time start to work which varies by at least a third of the month and whose earliest start time of a given month and the latest start time in the same month vary by at least 4 hours.

So the mere fact of working between 6 pm (18:00) to 6 am (06:00) is not enough to qualify for bonuses of shift work at night: the employee should also be subject to flexible hours.

A premium of 15% is granted to employees – except those who are entitled to a shift premium – if they perform at least one hour of work at night between 8 pm (20:00) to 6 am (06:00) (MT 141).