The issue seems to be about unreasonable work hours. On-call time is work time - perhaps not "full" work time, but definitely not free time or rest time. If you

The issue seems to be about unreasonable work hours. On-call time is work time - perhaps not "full" work time, but definitely not free time or rest time. If you're on call for 24 hours of Saturday, that's fine, but then work is taking up 24 hours more than your usual week, and deserves a major change in compensation or extra rest time (e.g. the following monday off) as it's a big change from a 40 hour or 50 hour week. If your team has allocated every engineer to an on-call day every week, that's the equivalent of expecting all of your engineers to devote 60+ hour weeks every week to their job - and IMHO that's not okay; some of your engineers may be fine with that (and would deserve what essentially is overtime compensation), but having that as a requirement for everyone is not reasonable in non-toxic workplaces, if there's no good place in your team for people who will only work 40-ish hours, then that would be pretty much discriminatory on multiple groups. Having a "week of on-call" is equivalent to a continuous 168-hour shift, which is simply not done anywhere else and should not be a thing. If you want 24/7 production services, then you need to map shifts of support. For continuous work you just run 3x8 or 2x12 hour shifts; but outside of IT industry where you need "spotty monitoring", 24 hours on / 48 hours off is a commonly used system - but it's not a 24 hour shift on top of another full time job.