The referees in an NFL game have a very difficult job in calling the game they are assigned to. The highest paid among the referees is unknown.
LaDainian Tomlinson is the highest paid running back in the NFL as of the 2004 season. He is paid $5.5 million, and is expected to be paid $6.5 in 2005.
They are paid the most in the NFL because they are the most sucesssful team in the NFL and they are awesome.