5 CFR §839.1103
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
No, employees who should have been automatically placed in FERS (generally because they did not have 5 years of past service under CSRS rules) do not have a CSRS component in their future FERS benefit. All service must be treated as FERS service in this circumstance.