true. it's more about how many hours, etc. also if the work contradicts what one is on SSDI or SSI for. Like, if you have a major back injury but you're doing some highly physical job that's going to raise a few eyebrows.
you can also go to school or volunteer. there are groups, both government linked and private that work with individuals and linking them to these sorts of things as well as ensuring recipients don't bite off too much and lose said benefits, promoting some agency so they're not just literal... well, chris chan's.