5 C.F.R. § 838.123 Claimants' responsibilities.
Title 5 - Administrative Personnel
Claimants are responsible for— (a) Filing a certified copy of court orders and all other required supporting information with OPM; (b) Keeping OPM advised of their current mailing addresses; (c) Notifying OPM of any changes in circumstances that could affect their entitlement to benefits; and (d) Submitting all disputes with employees or retirees to the appropriate State court for resolution.
Title 5: Administrative Personnel
PART 838—COURT ORDERS AFFECTING RETIREMENT BENEFITS
Subpart A—Court Orders Generally
Division of Responsibilities
§ 838.123 Claimants' responsibilities.