Note that the above is misstated and untrue.

If Returning To Work while on Social Security Disability ( note: no reference to SSI ) is a viable option for you, then heed the very clear parameters on Return To Work, especially a very clear understanding of SGA. This is clearly defined in the brochure/link helpfully provided by thickandtired.

If you've any further questions, do take them directly to your local Social Security Office for your clarification and clear understanding.