I worked at K-Mart for several years as a second job when I was working at school. I was told that the scheduls are subject to change without notice and that I would have to check it EVERY day... even on days off..

I laughed at them and told them clearly that this was my SECOND job and once I wrote my schedule down, my week was planned around that schedule. There wasn't room or time for changes in my schedule that was done on a weekly basis.... IF they needed me to come in and I had no plans scheduled for that day, I would come... if they needed someone else to have a day of mine, that was fine, just notify me not to come in because if I showed up, I would fully expect to get those hours. Odd, but they followed that strongly stated request of mine and they did call often to see if I could come in for extra hours.... I always went when they called.