CFR > Title 5 - Administrative Personnel > CHAPTER I—OFFICE OF PERSONNEL MANAGEMENT > SUBCHAPTER B—CIVIL SERVICE REGULATIONS (parts 110 to 990) > PART 839—CORRECTION OF RETIREMENT COVERAGE ERRORS UNDER THE FEDERAL ERRONEOUS RETIREMENT COVERAGE CORRECTIONS ACT > SUBPART J—Lost Earnings for Certain Make-up Contributions to the TSP (§839.1001 to §839.1004) > 839.1003—How will OPM compute the amount of lost earnings?

839.1003—How will OPM compute the amount of lost earnings?

(a) Lost earnings will generally be computed in accordance with the Board's lost earnings regulations ( 5 CFR 1606 of chapter VI). However, the FERCCA states that OPM may compute the lost earnings in an alternative manner if such a computation is not administratively feasible. The alternative manner will yield an amount that is as close as practicable to the amount computed under 5 CFR 1606 of chapter VI.
(b) Your employer is required to submit to OPM all information required to compute the amount of lost earnings.