Any clause intended to prohibit an employee from entering into another employment relationship with one or more employers outside the normal working hours agreed in the employment contract is null and void.
The same applies to any clause or act intended to subject the employee to unfavourable treatment on that ground.
However, an exception is made to this prohibition where holding several jobs is incompatible for reasons such as health and safety at work, the protection of business confidentiality, the integrity of the civil service or the prevention of conflicts of interest.