20 C.F.R. § 404.1510 : Employees' Benefits — SOCIAL SECURITY ADMINISTRATION — FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950- ) — DETERMINING DISABILITY AND BLINDNESS —DEFINITION OF DISABILITY — Meaning of substantial gainful activity

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 §404.1572 for further details about what we mean by substantial gainful activity.)

20 C.F.R. §404.1510