You receive 250k per year but your sleep schedule is flipped
If you used to be up from 8am - 10pm now you are up from 8pm - 8am. You are awake the same amount of hours but the time period you are awake reverses. There are no negative health effects from this and you treat this as if it is your normal sleep schedule. You cannot stay up into the day no matter what you try to do. This adapts to time zones.
You cannot cheat the system by taking "naps". Magic will detect if you intended to cheat the system or if you wanted a nap. If it detects foul play from you, it makes you pay last 4 years worth of payment and all of the money given to you so far. The game also ends.
You can choose to end this by paying 2 million dollars and everything will revert back to normal