OK, I've read as much negative about Walmart as the next guy, and as a result was not a fan and don't shop there.
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.
My standard equipment included a handheld bar-code scanner which revealed the in-store stock and nearest warehouse stock of every item on the shelves, and its profit margin. At the branch where I worked, all the lowest-level employees were allowed this information and were encouraged to make individual decisions about inventory. One of the secrets to Wal-Mart’s success is that it delegates many judgment calls to the sales-floor level, where employees know first-hand what sells, what doesn’t, and (most important) what customers are asking for.