Code of Federal Regulations Title 5. Administrative Personnel § 5.353.209 Retention protections

(a) During uniformed service. An employee may not be demoted or separated (other than military separation) while performing duty with the uniformed services except for cause. (Reduction in force is not considered “for cause” under this subpart.) He or she is not a “competing employee” under § 351.404 of this chapter. If the employee's position is abolished during such absence, the agency must reassign the employee to another position of like status, and pay.

(b) Upon reemployment. Except in the case of an employee under time-limited appointment who finishes out the unexpired portion of his or her appointment upon reemployment, an employee reemployed under this subpart may not be discharged, except for cause—