Someone I know works for a company that has a policy which says that the first 54 hours of overtime per year are included in the base salary.
And they make it hard to compensate for overtime. You can only take off one day at a time, if it's two days in a row it already counts as holidays.
This is as stupid as it can get. Basically it's a reverse bonus. If you just stay your regular hours you get paid 54 hours overtime you did not actually work (remember, they're included in the base salary). And if you have the bad luck to have 50 hours at the end of the year they're set to zero - no money for you, my friend.