Hmm, this is not correct. I work as a employment specialist for individuals with developmental disabilities, and they rarely, if ever, lose SSI or SSDI if they start working, so long as they stay under certain thresholds (hours, wage and assets). We work closely with benefits counselors to figure out where the line is with each individual, then leverage our relationships with employers to help said individual hit that sweet spot where they are working as much as allowed while still able to collect.

This always results in the individual making far more than just collecting disability alone, even if the payments are reduced.

The idea of "all or nothing" is a myth that prevents a lot of folks on disability who want to work from doing so. If you happen to be such an individual, please reach out to a benefits counselor in your state and set up a meeting.