20 C.F.R. § 216.54 Who is an employee's wife or husband.
Title 20 - Employees' Benefits
An employee's wife or husband is an individual who— (a) Is married to the employee; and (b) Has been married to the employee for at least one year immediately before the date the spouse applied for annuity; (c) Is the natural parent of the employee's child; (d) Was entitled to an annuity as a widow(er), a parent, or a disabled child under this part in the month before he or she married the employee; or (e) Could have been entitled to a benefit listed in paragraph (d) of this section, if the spouse had applied and been old enough in the month before he or she married the employee.
Title 20: Employees' Benefits
PART 216—ELIGIBILITY FOR AN ANNUITY
Subpart F—Spouse and Divorced Spouse Annuities
§ 216.54 Who is an employee's wife or husband.
