When will my premium conversion begin?
CFR · 2024-01-01 · US · Title 5
If you are newly employed or newly eligible for FEHB in a covered Executive Branch agency (as described in § 892.201(a)), your salary reduction (through a Federal allotment) and pre-tax benefit will be effective on the 1st day of the first pay period beginning on or after your employing agency receives your enrollment.
official document · source cfr-2024 · id 5:§ 892.203