20 C.F.R. § 222.15 When spouse is living with employee.
Title 20 - Employees' Benefits
A spouse, or widow(er) is living with the employee if— (a) He or she and the employee are living in the same household; or (b) The employee is contributing to the support of the spouse or widow(er); or (c) The employee is under court order to contribute to the support of the spouse or widow(er).
Title 20: Employees' Benefits
PART 222—FAMILY RELATIONSHIPS
Subpart B—Relationship as Wife, Husband, or Widow(er)
§ 222.15 When spouse is living with employee.

