5 C.F.R. § 838.1008
(a) In a case in which the court order affects employee retirement benefits:
(1) The Associate Director will notify the employee, Member, or retiree that a court order has been received that appears to require that a portion of his or her retirement benefits be paid to a former spouse and provide the employee, Member, or retiree with a copy of the court order. The notice will inform the former employee or Member—
(2) The Associate Director will notify the former spouse—
(b) In a case in which the court order awards a former spouse annuity—
(1) The Associate Director will notify the retiree, if living, or, if the employee, Member, or retiree is dead, his or her surviving spouse, or the person entitled to the lump-sum death benefit under section 8342 of title 5, United States Code, if possible, that a court order has been received that requires the payment of a former spouse annuity. The notice will include a copy of the court order. The notice will state—
(2) The former spouse will be notified—