(1) The appointing authority, with the approval of the commission, may grant an officer a leave of absence without pay for a period not to exceed one year. In the event an officer on leave takes a higher position in police work which does not come under the merit system provisions of this act, the leave may, with the consent of the commission, be renewed. In the event an officer is elected sheriff, or is appointed chief deputy, the officer shall automatically be placed on leave for the period of time the officer remains sheriff or chief deputy. Upon the termination of a leave of absence, the officer shall be returned to the officer’s former position.

(2) Sick leaves and vacations with pay shall be as provided by law or ordinance.