5 CFR § 831.205
CSRS coverage determinations to be approved by OPM
November 4, 2020
If an agency determines that an employee is CSRS-covered, the agency must submit its determination to OPM for written approval. This requirement does not apply if the employee has been employed in Federal service with CSRS coverage within the preceding 365 days.
[66 FR 15608, Mar. 19, 2001]