20 C.F.R. § 404.437 Excess earnings; benefit rate subject to deductions because of excess earnings.
Title 20 - Employees' Benefits
We will further reduce your benefits (other than a disability insurance benefit) because of your excess earnings (see §404.430), after your benefits may have been reduced because of the following: (a) The family maximum (see §§404.403 and 404.404), which applies to entitled beneficiaries remaining after exclusion of beneficiaries deemed not entitled under §404.436 (due to a deduction for engaging in non-covered remunerative activity outside the United States or failure to have a child in one's care); (b) Your entitlement to benefits (see §404.410) for months before you reach full retirement age (see §404.409(a)) (this applies only to old-age, wife's, widow's, widower's or husband's benefits); (c) Your receipt of benefits on your own earnings record, which reduces (see §404.407) your entitlement (or deemed entitlement; see §404.420) to benefits on another individual's earnings record; and (d) Your entitlement to benefits payable (or deemed payable) to you based on the earnings record of an individual entitled to a disability insurance benefit because of that individual's entitlement to workers' compensation (see §404.408). [70 FR 28814, May 19, 2005]
Title 20: Employees' Benefits
PART 404—FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950– )
Subpart E—Deductions; Reductions; and Nonpayments of Benefits
§ 404.437 Excess earnings; benefit rate subject to deductions because of excess earnings.