CFR › Title 20 › Part 404 › §404.151020 CFR §404.1510Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkSubstantial gainful activity means work that— (See § 404.1572 for further details about what we mean by substantial gainful activity.)(a)Involves doing significant and productive physical or mental duties; and(b)Is done (or intended) for pay or profit.