We get time off in lieu for hours worked, and paid (at a fixed rate across the company) for hours where we need to be available to be paged. You don't want to

We get time off in lieu for hours worked, and paid (at a fixed rate across the company) for hours where we need to be available to be paged. You don't want to only get paid if you're paged, especially if your services are normally quite reliable. Fail-safes are one thing, but they don't always kick in when we need them. My team is only paged one or two times a month, and when we are it's probably for something we've not seen before because whatever it was that broke last time has been fixed.