<prompt> Human: I have a co-worker who swears theres a sweet spot to working overtime. He said that if he works too much overtime he gets bumped up into a different tax bracket for that week and so much in taxes come out that he actually brings home less money than if he had worked fewer hours. Arent tax brackets determined on a yearly basis, not week to week?  <response>: Arent tax brackets determined on a yearly basis, not week to week?Yes.Your co-worked is confusing tax owed with tax withheld. 