All officers and employees of the state, or of any parish, city, town, political subdivision, unit, or any state institution thereof, who are members of the Officers' Reserve Corps of the Army of the United States, the National Guard of the United States, the Naval Reserve Corps, the Marine Corps Reserve, the Air Force Reserve, the Citizens Military Training Corps, or the Civil Air Patrol, either as officers or enlisted men, are entitled to leave of absence from their respective duties, without loss of pay, time, annual leave, or efficiency rating, on all days during which they are ordered to duty with troops or at field exercises, or for instruction, for periods not to exceed fifteen days in any one calendar year; and when relieved from duty, they are to be restored to the positions held by them when ordered to duty.
La. Public Officers and Employees § 42:394