If the economy wasn't in a massive slump, this article wouldn't have been written. It acts as an apology for predatory business practices, and the exploitation of a working class.
It isn't hard to google examples of Walmart encouraging their employees onto social assistance programs in order to ensure they get a living wage. This has been happening for over a decade now.
Also, I could direct you towards the average market rate in Nepal or Shenzhen Province in China, and we could have a fun conversation about Walmart's exploitation of the third world, but we'll stick to the goalposts we have.