Most NFL referees have other jobs and work those during the off season. Some NFL referees are business owners or attorneys.
To signify a fumble.
NFL referees were never volunteers. However, many of them got their start in recreational leagues near their hometowns as volunteers.
because you are mean
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.
The referees have to control the game and players, and decide when the ball is a free kick, penalty, throw in and a corner.
NFL referees make approximately $149,000 to $173,000 a year. If they work playoff games, then they will earn an additional $7,500 to $10,000 more per game.