There's some interesting concepts you've brought up here:

1) Does Wal-Mart force their employees to do overtime? How is this legal?

2) Are Wal-Mart employees paid well enough to take pride in the appearance of their store?

3) Do Wal-Mart employees have a bad day because they have to fish an open bag of sliced ham out of a box in the Shoe Department?

my personal experience is "no" on all three, but I'd be interested to see other experiences from current or former Wal-Mart employees.