I think you're right, and furthermore note that low income jobs in the US rarely come with health insurance (until very recently), and also were lacking in paid

I think you're right, and furthermore note that low income jobs in the US rarely come with health insurance (until very recently), and also were lacking in paid sick leave. Some of these jobs will even fire you for taking unpaid sick leave. On top of all of that, although health clinics do exist which operate outside of normal working hours, the quality of care appears to be worse.