Overage/Callout
I worked the "DuPont" rotation for 8 years at a papermill. Our schedule was posted weekly, we did not have an on call status, and we did not track OT for each person.
If OT was needed to cover a known vacancy, the "short off"man for that post position was scheduled. If the "short off" man wanted to give his OT away it was his reasonability to find someone. This could be another "short off" man that was post qualified or the "long off" man for that post or any "long off" post qualified.
If OT was not known(emergency/unexpected) the "short off" man was called first, if he did not answer or refused the callout, then any post qualified "short/long" man could be called.
The supervisor was only required to call the "short off" man first, then he could call any one post qualified. Most of the time he knew who were the OTH's (OVER TIME HOGS) and he would make one more call and the post would be filled.
Long changes were treated like the Holy Grail and they did everything possible to keep from scheduling people in on their long changes.
There was only one shift/day that the "long off" man was scheduled, it was the day in the middle of the long change. This was due to the shift changes between the other 3 shifts.
We never had a problem filling OT, we were never required to be on-call, and we never had a problem getting or giving away OT.
We also started our 4 day lights on Sunday unlike the Chemical plats that started on Monday, this enabled us to have at lease one day off on the 2 work weekends.
If this is unclear Pm me so that we can discuss in more detail.