Substantial Gainful Activity (SGA) is work that earns a claimant over a certain amount of money.
When applying for Social Security Disability Insurance (SSDI) or Supplemental Security Income (SSI), your Substantial Gainful Activity (SGA) is one of the factors that will be used to determine your eligibility for disability benefits. Basically, if you are earning income from employment that exceeds a certain amount, then you may not qualify for disability benefits.
According to the Social Security Administration, if you are able to engage in SGA, then you are not eligible for disability benefits.
If you are currently receiving disability benefits and you want to continue to receive those benefits, your income from employment cannot exceed the amount that would classify you as engaging in SGA.
If you are collecting disability benefits and you want to try and return to work, the Social Security Administration has a “trial work period” program. While doing a trial work period, you are allowed to work and earn money that exceeds the SGA amount and still collect benefits.