Military Leave of Absence. Philadelphia Employment Lawyers at Galfand Berger protect individuals with military leave rights. 1-800-222-8792.The procedure is to fill in the leave form and give it to the supervisor. The Employee will be asked to provide a copy of official orders for leaves exceeding thirty (30) days in duration. 1. Go to your platoon sergeant, give that individual the dates you want to go on leave, and ask for permission to take leave. An employee must request such a leave of absence, in writing, as early as possible, but not later than two weeks prior to the start of his military duty.