20 C.F.R. § 416.910 Meaning of substantial gainful activity.
Title 20 - Employees' Benefits
Substantial gainful activity means work that— (a) Involves doing significant and productive physical or mental duties; and (b) Is done (or intended) for pay or profit. (See §416.972 for further details about what we mean by substantial gainful activity.)
Title 20: Employees' Benefits
PART 416—SUPPLEMENTAL SECURITY INCOME FOR THE AGED, BLIND, AND DISABLED
Subpart I—Determining Disability and Blindness
Definition of Disability
§ 416.910 Meaning of substantial gainful activity.