Officials at the top end of the game receive a lot of negative attention from managers and media, but how much do they earn for their troubles?
Being a referee is one of the most difficult jobs in football. Every decision you make is analysed and scrutinised by managers, players and fans.
Even the addition of Video Assistant Referees (VAR) has not made things easier, with plenty of controversy surrounding the new technology designed to limit mistakes.
Some of the Premier League's best known referees have gone on to officiate in World Cups and European Championships, with Howard Webb becoming the first person to referee both the Champions League final and the World Cup final in the same year.