It depends on the kind of benefits you receive. Survivor's benefits for disabled dependents of disabled, then deceased parents, (or of people with a deceased spouse collecting disability at the time) can be much lower. Mine are $800 per month, plus Medicare premiums.
As a condition, I am allowed to earn $900 per month for (I believe) 9 (or 12?) of any 18 (or 24?) month period within a sliding window, but if I earn any more than that for 10/13 months months, I lose everything. No medical, no insurance.
My benefits are under my deceased father's Social Security number, which means they're what he earned during his lifetime and have just been passed on to me. Re-applying if I lose my job after giving up my benefits means qualifying on my own disability from a starting point of zero, and could take several years if successful at all.
As the system works today, I can do a little consulting and pull in just enough to have to file taxes every year, owing a few hundred dollars on tax day due to being paid via 1099. This would be utterly unsustainable, if I were single and living alone. Under a Universal Basic Income system, or at the very least, a reformed/streamlined and more forgiving model that allowed me to keep my medical insurance through Medicare no matter what, I would feel the freedom to try and work more, work harder, and start my own full-scale consulting business. But I can't take that risk now, because it's just too damn high.