Journalist goes undercover at Walmart

And concludes it is much better to work there than Target or mom-and-pop shops (via Mark Perry):

Getting in was not easy, as more than 100 applicants were competing for fewer than 10 job openings. Still, I made it through a very clever screening quiz, then through a series of three interviews, followed by two days of training. I felt ambivalent about taking advantage of the company’s resources in this way, but I was certainly willing to do my part by working hard at the store, at least for a limited period.
...
The job was as dull as I expected, but I was stunned to discover how benign the workplace turned out to be. My supervisor was friendly, decent, and treated me as an equal. Wal-Mart allowed a liberal dress code. The company explained precisely what it expected from its employees, and adhered to this policy in every detail. I was unfailingly reminded to take paid rest breaks, and was also encouraged to take fully paid time, whenever I felt like it, to study topics such as job safety and customer relations via a series of well-produced interactive courses on computers in a room at the back of the store. Each successfully completed course added an increment to my hourly wage, a policy which Barbara Ehrenreich somehow forgot to mention in her book [Nickel and Dimed].
...
Several of my co-workers had relocated from other areas, where they had worked at other Wal-Marts. They wanted more of the same. Everyone agreed that Wal-Mart was preferable to the local Target, where the hourly pay was lower and workers were said to be treated with less respect (an opinion which I was unable to verify). Most of all, my coworkers wanted to avoid those “mom-and-pop” stores beloved by social commentators where, I was told, employees had to deal with quixotic management policies, while lacking the opportunities for promotion that exist in a large corporation.

Of course, I was not well paid, but Wal-Mart is hardly unique in paying a low hourly rate to entry-level retail staff. The answer to this problem seems elusive to Barbara Ehrenreich, yet is obvious to any teenager who enrolls in a vocational institute. In a labor market, employees are valued partly according to their abilities. To earn a higher hourly rate, you need to acquire some relevant skills.

This, on top of Walmart saving each household $200 per month!