Until recently, Military Leave could only be used for active duty, such as Annual Training (AT), Active Duty for Training (ADT), Active Duty for Special Work (ADSW), etc. But on October 5, 1999, Public Law 106-65, National Defense Authorization Act for Fiscal Year 2000, was signed which amends Section 1106 of 5 U.S.C 6323(a)(1) to permit employees who are members of the Guard and Reserve to use military leave for "inactive-duty training (IDT).
Traditionally, IDT is thought of as the "weekend drills" or weekend training periods that Guard and Reserve members attend each month. In today's environment, it is not unusual that Guard members and Reservists will reschedule their regular IDT to be performed during the week with an Active Component command.
An IDT period consists of a minimum of 4 hours. Usually, 2 IDT periods are performed and credited to the Guard member or Reservist for each full day of service in this capacity. Military Leave must be approved and taken in full-day increments. Therefore, it is not appropriate to approve a full day of Military Leave for the Guard member or Reservist to perform one IDT period (normally 4 hours in length). If the command to which the member is assigned for IDT will provide documentation acceptable to the supervisor showing that a single IDT period consisted of at least 8 hours, an exception can be made.
When requesting Military Leave for AT, ADT, ADSW, etc., the Guard member or Reservist provides the supervisor a copy of his/her orders--if the orders have been received in advance. Upon completion of active duty and return to work, the supervisor is provided a copy of the orders with dates, times, and signatures verifying that the period of active duty was actually performed.
Unfortunately, as a general rule, orders are not issued for IDT. However, members of the Guard and Reserve receive a form, e.g. Record of Individual Performance of Reserve Duty Training, DD Form 1380 (NAVRES 1570/22), which differs by Service in association with IDT. As is the case with active duty orders, the Guard member or Reservist may have a copy of the form in advance of performing the IDT, or not. Upon completion of the covered IDT, this completed form certifies, in essence, that the IDT was actually performed and serves as a basis for pay and retirement points. Supervisors should require a copy of the form as verification that the scheduled IDT was actually performed and that Military Leave was appropriately granted.
A supervisor may also accept an SF-71, Request for Leave with military leave annotated in the remarks section; a memorandum from the Commanding Officer, or any other form deemed acceptable by the supervisor.