My manager is asking me to drop my life, and work 20+ hours a day while they go on vacation. They did not ask me, and they gave me 5 days notice. This lovely person will not pay over time (99% sure it is required here) and is already having me do work 100% out of my description. I have decided to tell them no. I know they will yell, and be pissed. I do not know how to say it though. I really would rather keep my job, but I refuse to work that. I would offer to work some hours, but this person basically only has us working. (Say for a 20 hour a week coworker) so I really need advice on how to navigate this, hopefully with out being fired. They already got tickets, but I do not feel bad. They just dropped this on me with no back ups.