Code of Federal Regulations Title 20. Employees' Benefits § 20.216.54 Who is an employee's wife or husband

(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.