I currently work for a company that requires on-call coverage for each of its field employees once every 5-6 weeks. I always clock an 8 hour day during my weekend coverage regardless of workload because I am beholden to the work regardless if there is any available. I haven’t had any issues with this until I worked over Christmas weekend. My boss called in the middle of last week asking how many calls I received on Christmas Day to which I replied none. I sat at my house, didn’t visit my family with my wife and kids, didn’t drink, and didn’t participate in any festivities due to the chance that I may receive a call. He claimed that that was not company policy and cut my hours down from 8 to 3 because he didn’t want to pay my double time rate. Seems to me like you should be paid being on call regardless but IANAL.