AR 690-630 governs Department of the Army civilian personnel policies for absence from work and leave administration.
View AR 690-630 on armypubs.army.mil
It addresses annual, sick, unpaid, family and medical, parental, military, home, shore, court, donor, deployment, funeral, and emergency leave. It establishes requirements for requesting, approving, documenting, charging, accruing, substituting, and limiting leave.
Employees must request leave from approving officials through either a written Office of Personnel Management (OPM) Form 71 (Request for Leave or Approved Absence), or an approved automated timekeeping system. (paragraph 2-1)
Leave requests are not approved until authorized by an approving official. (paragraph 2-1)
The total amount of annual leave advanced to an employee in a single leave year may not exceed the number of hours the employee will accrue during the remainder of the current leave year. (paragraph 3-5)
For unscheduled sick leave absences of more than 3 consecutive scheduled workdays, or 2 consecutive scheduled 24-hour duty periods (for employees on uncommon tours of duty scheduled on a 24 hours on, 24 hours off basis), the employee seeking the leave will be required to provide administratively acceptable evidence. (paragraph 3-6)
Specifically, leave approving officials should issue a decision regarding the request no more than 10 calendar days after receipt of the request, or before the start of the requested period of extended LWOP, whichever occurs first. (paragraph 3-6)