I work as a project engineer fresh out of college for a general contractor. My project manager asked if I could work this weekend. I said “no I'm busy with family commitments”. She asked which day. I said “the whole weakend”. And she left it at that. I live 35 min from my project site. There's no chance I'm gonna commute an hour on my day off to baby sit people on a job site. Don't let your work take over your personal life. I will never volunteer to work extra unless they tell me I have to and even then I might not if can get out of it. All my colleagues volunteer or don't even protest if they are asked to work weekends. And they wonder why less people are interested in working in the construction industry.