CFR > Title 5 - Administrative Personnel > CHAPTER I—OFFICE OF PERSONNEL MANAGEMENT > SUBCHAPTER B—CIVIL SERVICE REGULATIONS (parts 110 to 990) > PART 838—COURT ORDERS AFFECTING RETIREMENT BENEFITS > SUBPART D—Procedures for Processing Court Orders Affecting Refunds of Employee Contributions (§838.401 to §838.441) > 838.441—Computing lengths of service.

838.441—Computing lengths of service.

(a) The smallest unit of time that OPM will calculate in computing a formula in a court order is a month, even where the court order directs OPM to make a more precise calculation.
(b) If the court order states a formula using a specified simple or decimal fraction other than twelfth parts of a year, OPM will use the specified number to perform simple mathematical computations.