The extension of activity is renewed by tacit agreement for the same period, subject to the production by the person concerned of a medical certificate of physical and mental fitness drawn up by an approved doctor and sent to the director of the establishment to which he is assigned, at least three months before the end of the current period.
The practitioner shall inform the director of the establishment of his intention not to continue working at the end of the current period at least three months before the end of that period.