Here looking for the right way to respond. My first impulse was to rage quit, but I want to have a clear head before I do something I may regret.
We have 12 hour shifts and rotate weekends. When I was interviewing for the position, I was very clear that I did a double shift on Wednesdays and could only work Thursdays, Fridays, and Saturdays. They said they would work around my other job and for a while they did.
Now we are short a person (they've had 6 weeks to replace her) and it's time for the new schedule. And guess who is working 4 12hr shifts? It is only 2 times, but that means I work 6 days/64 hours, one day off, then 5 days/52 hours, 2 days off, then repeat. When I pointed out that I was physically unable to work that many hours, she said that everyone is working extra and I have to too.
They crossed a boundary by ignoring my workload outside of this position. Actually, I guess what I really want to know is, how much notice do I need to give?