Let's look at the food stamp eligibility:
You have to work at least 80 hours a month
If you are employed, you are not allowed to quit your job, and if you are recently unemployed, you may have to provide proof unemployment was not voluntary.
You also can not intentionally reduce your hours. If your hours were reduced, and that is what made you eligible for SNAP benefits, you may have to provide proof that you did not voluntarily cut your hours.
If your household only consists of one person, then the gross monthly income to be eligible for SNAP is $1,287 (net $990). For two people, gross is $1,726 (net $1,335).
Seems like laborers on food stamps can't just quit. And they have to earn basically nothing to be eligible.