A part-time employee is an employee whose working time is less than :
1° The legal working time or, where this is less than the legal working time, the working time agreed for the branch or company or the working time applicable in the establishment;
2° To the monthly working time resulting from the application, during this period, of the legal working time or, if this is lower, the working time agreed for the branch or company or the working time applicable in the establishment;
3° To the annual working time resulting from the application during this period of the legal working time, i.e. 1,607 hours, or, if this is less, the working time set by agreement for the branch or company or the working time applicable in the establishment.