In states/programs that don't do asset tests, certainly you could. I know this because in my situation -- single, working mother of 4 -- people are CONSTANTLY telling me I should quit my job and either not work at all or work part-time for minimum wage so that we can live better than we do now. I should clarify: I don't mean random people who don't know what they're talking about. I mean the people that are administering these programs; I deal with them often trying to get assistance for residents at my various properties (for my job, not my personally-owned rental properties). And out of curiosity, I actually did the math. It's true; I could quit my job -- not get fired; quit -- and live a life equal to the one we are living now for housing and food and BETTER than what we have now for insurance coverage, heating our home, after-school care and programs for kids, upcoming college costs and/or continuing education for myself if I wanted it, reduced or eliminated student loan payments, and numerous other programs such as weatherization services, financial planning and savings-match programs, and so on. The reduced stress for me of constantly juggling income and expenses would be a big impact too.
I won't quit my job, though. And if I happen to get fired for any reason, I'll get another job. For all of the reasons posted above about why this is unethical and also because I want my children to learn and see that doing the right thing isn't always the easiest thing, and that we are responsible for ourselves. Learning all that I have from MMM and from you all in the forums is helping to make doing the right thing easier and I'm teaching my kids these things too.