5 CFR § 352.506
Application for reinstatement
November 4, 2020
An employee who desires reinstatement shall apply for reinstatement, in writing, no later than 30 days after his appointment under authority of section 233(d) or section 625(b) of the Act is terminated, unless arrangement has been made for his reinstatement without a break in service under §352.505(b).
[36 FR 13897, July 28, 1971]