I don't know Walmart personally, but in Denmark we have similar stores. People working there are probably the ones paid the lowest wages (about $16 an hour), except for cleaners. However, most people here are members of Unions and I'm happy for that. When I was very young and started to work, I couldn't see the point of having to pay an amount every month to the Union, but I soon saw the benefits of the negotiation they did to fight for your rights.