When an employee must be available when called, for example by telephone, but may stay at home or at another place freely chosen by him, an on-call premium may be freely determined between the employer and the employee and must, where appropriate, be indicated in the employment contract or a subsequent addendum.
If the employer is obliged to be present at a specific place to be available in case of need or if he must go to work during the on-call period, that time is to be considered as working time and the employee is entitled to be remunerated.
If hours served while on-call involve ovetime, Sunday working and/or public holidays, the employee is entitled to the legal or contractual pay supplements.