Here's the situation real fast. Im an overnight grocery employee and my department head is a fist full of sociopath. My schedule was set a certain way for this week. She didn't like it when she came in on Monday morning, so she altered two days of my schedule to her liking, and it's more than an inconvenience. 

She crossed out my hours on the schedule and wrote in what she wanted me to work. Now I've spoken with every old timer there and I've been getting two answers. One is that she may change my schedule as long as I have a 24 hour notice. The other is that she cannot alter the schedule once noon has passed on the saturday following the release of the schedule. 

What I DO know is that hours can be changed under emergency circumstances (weather, etc). Now this would normally be an unknown (seeing as I'm not the sociopath) BUT!!! She was kind enough to write at the bottom of the schedule "No more schedule changes, we only have two people @10. Someone changed schedule without permission." She takes it a step further by printing our store manager's name underneath my altered hours. 

I don't know how to go about getting my previously scheduled hours back. Do I file a grievance? Do I just work my original schedule? Because in my mind, the schedule being changed without permission is NOT an emergency situation. 

Thanks for any and all help. Time to go to the nightmare factory.