Requires an agency to grant leave without pay to any exempt or nonexempt full-time permanent employee who requests such leave to serve in the United States peace corps, participate in a program sponsored by a humanitarian organization, or participate in a faith-based mission.

Provides that the employee's participation in insurance, vacation, retirement pay, or other benefits offered by the employer shall be governed by rules and practices, existing at the time the leave is granted.

Provides that, upon the employee's return, the employee shall be restored, without loss of seniority, to his or her previous position or an equivalent one.

Provides that the employee may not be dismissed from his or her position without cause within one year after restoration.