The problem with your theory, ADCMS is that unemployment is high and part time jobs are some of the only jobs available. New job growth has produced a lot of part time jobs. Another problem is that the economy is built on these jobs; someone will always have to work them.
I was stating a personal view, not a theory.
If the economy is built on low-paying part-time jobs, and unemployemnt in general is high, then it isn't a Walmart problem, is it?
When I hear these arguments it reminds me of what happened a few years ago when activists shut down Nike factories in somewhere like Malaysia. The activists successfully shut the factory down permanently due to exploiting their workers, low wages being the primary complaint of the activists. Guess what? The workers were furious because Nike was the only job in the area that paid anything worth working for. Low wages are better than no wages.
I'm not supporting corporate exploitation of workers, I find the business-model of many corporations to be despicable, but an oft repeated theme here is, 'sure the workers don't have an education or any saleable skills, but they deserve a high wage'. Why? Higher wages are a natural outcome of more education and more skills. There's a reason why a shelf stocker at Walmart doesn't make the same money as the store manager or a university professor. Besides, if the economy is in the tank, there are few jobs available, and a Walmart in a depressed area is hiring, then a person has a few hard choices to make: work for Walmart, work for another local company, move to an area with a better economy, get an education, develop some marketable skills, or start their own business.