I work in service plumbing and on call is not in my job description at the moment. I have a decently busy life with a good amount of friends and he always calls me Friday evenings or when I’m wrapping up my day and asks me to work on Saturday. I have a really stubborn coworker who tells me I need to leave all my friends and life behind and there’s no time to go out and enjoy my weekends, I work on his schedule and I don’t even get 40 hours a week sometimes and every job is a rat race with him and he uses every opportunity to put me down for being young and wants me to be just like him living a miserable life. I always feel bad saying no but there’s more than 10 times I’ve agreed to come in after being called on a Friday night. How would you guys feel in this situation?