20 C.F.R. § 220.160 How work for a railroad employer affects a disability annuity.
Title 20 - Employees' Benefits
A disability annuity is not payable and the annuity must be returned for any month in which the disabled annuitant works for an employer as defined in part 202 of this chapter.
Title 20: Employees' Benefits
PART 220—DETERMINING DISABILITY
Subpart M—Disability Annuity Earnings Restrictions
§ 220.160 How work for a railroad employer affects a disability annuity.

