[throwaddzuzxd]

French here.

My contract says that if on-calls are needed, I might have to be in the rotation. This clause increases my pay rate even if I'm not on-call.

If however I am actually on-call, I am paid more. And if the on-call rings, I'm again paid more on top of the on-call period. And as the French law mandates 11 consecutive hours of rest, if the on-call rings in the middle of the night, I'll usually come to work later the day after.

If you don't have advantages for being on-call, you're the one being taken advantage of.