Why not just have on-call being an auction? Some people hate on call, some people love it since they are usually at home playing games anyways or don't mind so

Why not just have on-call being an auction? Some people hate on call, some people love it since they are usually at home playing games anyways or don't mind so much being disturbed during sleep and love to make some extra money on the side. So just auction the on-call times and have employees bid for them. Naturally, bids for on-call at christmas will probably be lower and for some other times higher. Employer can set a max. compensation they are willing to pay - if there isn't a low enough bid, well, on-call isn't happening. :) In some companies something like that is already achieved by allowing people to switch times and also exchange compensation. A fully fledged auction is just the next step.