This article looks to me like the underpaid supporting their underpaid co-workers, while their employer does pretty well out of it.
How about Walmart doing the same thing?
This is just one more example of government (in this case by Food Stamps – see further down the article) subsidising capitalism. It happens in the UK with Tax Credits and Housing Benefits – often not paid for (in taxes) by the people who reap the benefits (global business and buy-to-let landlords). This must be unsustainable in the long-run!