Code of Federal Regulations · Section
§ 220.29 — Work That Is Considered Substantial Gainful Activity
20 C.F.R. § 220.29
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Work is considered to be substantial gainful activity if it—
(a) Involves doing significant and productive physical or mental duties; and
(b) Is done or is intended to be done for pay or profit. (See § 220.141 for a detailed explanation of what is substantial gainful activity.)
Authorizing Statute
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Railroad Retirement Board45 U.S.C. § 231f
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Annuity eligibility requirements45 U.S.C. § 231a