Public service pensions (PSP) are retirement benefits spouses receive from any local, state or federal governmental agency, other than SSA and the RRB. These benefits may be paid as either monthly payments or a lump-sum payment. Two-thirds of the amount of this PSP may be deducted from the amount of the spouse increase, preventing the Special Guaranty rate from being paid.
Refer to Booklet RB-30 Spouse/Divorced Spouse Annuity for a more detailed explanation of the PSP reduction. Ask the nearest RRB field office if the PSP reduction would apply to your spouse.