Scheduling of Employees in Public Service

Various sectors of the public service require the scheduling of their employees in order to effectively serve the citizens. There are sectors where opening hours extend beyond business hours, including, in some cases, night and Saturday shifts. In particular, to better serve the students, several university libraries keep their doors open until 9 p.m. and on Saturday mornings. In the case studied, the library has only eleven employees, divided into three levels: basic, technical, and superior. For the library to be open during all shifts, it is necessary to ensure that there are at least three employees, at least one of who has a technical level or superior. In this work, we aim to maximize the time options of the employees by ensuring that everyone works a 40-hour shift per week and, throughout the semester, compensating for the hours corresponding to the hours related to days not worked due to long holidays.