Determining disability and blindness; substantial gainful activity guides. Social Security Administration. Final rules.

We are revising our rules to reflect amendments to the Social Security Act (the Act) concerning the trial work period and the disability insurance reentitlement period. We are also clarifying certain standards we use to determine whether work is substantial gainful activity and whether an individual is entitled to a trial work period, thereby further explaining how we determine disability under titles II and XVI of the Act.