It depends on the utility.
When I was a Control Room Supervisor at Fermi I was paid a MINIMUM of 40 hours, in other words I was guaranteed 40 regardless of what I worked.
When I worked OT covering the Shift I was paid OT at a Straight time rate. I also got Shift Differential. (1 or 2 dollars an hour)
My bonus was paid every 6 months. If I failed requal my bonus was docked until I got passed my requal. If I remember correctly at one time I got paid time and a half on holidays.
When I became a Shift Manager my first two years I did not get paid for OT, however, we got a huge pay raise to give it up, and they had enough off shift SMs so I never had to cover vacations.
My SRO Bonus was paid the same way as a CRS.
In both positions I alledgedly got a Profit Sharing check, but DTE figured out ways to screw you out of that most years. As a Shift Manager I did get stock options, which I exercised when I left for a pretty penny.
My last 2 1/2 years at DTE SMs were paid for their OT so long as they were covering the shift.
When I interviewed at North Anna the SROs there got time and a half for OT, but their SRO bonus was a joke, and they were payed slightly under the rate I would expect for an SRO. I'm not real sure how much OT they worked because it seemed like they had a relief SRO on each shift whose job it was to cover vacations.
TVA SROs get paid for 40 hours regardless of how many they work. Our SRO Bonus is rolled into our salary and we get a bonus rolled in for being shift workers.
Outages pretty much suck whether you get paid OT or not!!
Mike