When I used to be on call for Cisco WebEx services. I got paid extra, and got extra time of. Even if nothing happened. In addition we where enough people on the rotation, so I didn't have to do it that often.

I believe the rules varied based on jurisdiction, and I think some had worse deals, and some even better. But I was happy with our setup in Norway.

Tbh I do not think we would have had, what we had if it wasn't for the local laws and regulations. Sometimes worker friendly laws can be nice.