In order to ensure continuity of care, the organisation of medical, pharmaceutical and odontological working hours, based on the specific characteristics of the different structures, is decided annually by the Director of the establishment after consultation with the establishment’s medical committee. A nominative duty roster, drawn up on this basis, is approved on a monthly basis by the director after consultation with the head of the department, on the proposal of the head of the department or, failing this, the head of the functional unit or another internal structure.