Effective 1/1/57, civil service survivor annuitants (surviving spouses and children)
                  whose annuities are based in part on MS before 1/1/57, are permitted to waive their
                  civil service annuities in order to receive SS credit for the MS. The wage credits
                  may then be used for eligibility and computation purposes in the initial award or
                  for recomputation.
               
               The waiver applies to the entire annuity; i.e., it applies to the part which is based
                  on civilian Federal service as well as that part which is based on pre-1957 MS. The
                  waiver may be executed when the survivor annuity is first payable or at some later
                  time. MS wage credits are granted effective with the month the OPM survivor annuity
                  ends.
               
               While waivers of annuities are provided for under civil service law and such waivers
                  may be revoked, a waiver does not alter the use of MS by OPM in a benefit determination
                  (which bars SS MS wage credits) except in the case of a survivor. The SS Act provides
                  for this exception and its irrevocability.
               
               An annuity waiver by the retired worker would not permit SS MS wage credits. If the
                  retired annuitant was ever entitled to a benefit based in part on the pre-1957 MS
                  during their lifetime, the exception does not operate since it only applies to an
                  OPM survivor annuity benefit determination, and not to a survivor benefit as a result
                  of an annuitant's election.
               
               If there is no surviving spouse, a child will never waive an annuity for SS wage credit
                  purposes since OPM does not use MS to compute a child's survivor annuity.