(a) An employee who completed a qualifying move under §847.402(a) may elect to be covered by CSRS, if the qualifying move was from a CSRS-covered position, or FERS, if the qualifying move was from a FERS-covered position, for all Federal service following the qualifying move. Employees who elect to be covered by CSRS will be prospectively covered by the CSRS Offset provisions set out in subpart J of part 831 of this chapter.

(b) A survivor eligible for benefits under the NAFI retirement system which covered an employee at the time of death may make an election under this section if the employee was otherwise eligible to make an election, but died before expiration of the time limit under §847.304.