In Fight Club, why is the blackmail scene different in the movie from the version in the book? Was this script changed for screenplay, or rather the director? What was the motivation here for the shift? In the book this takes place in chapter 15:
Tyler first goes to the union president of his job as projectionist. When Tyler speaks to the Union President, this huge fellow beats the shit out of Tyler, much alike the movie scene in Lu's basement. Immediately after this, Tyler sets the narrator to go to the man in charge at the Pressman Hotel were he's a waiter. So the narrator does his blackmail, but at the hotel (not the insurance company like in the movie), and gives some interesting strong lines, even almost repeated from Tyler's lines: "You have so much, and I have nothing." It leaves a harsher and more class-political idea than in the movie.