He took up refereeing in 1987, becoming a full-time referee in 1995.
He worked as a high school teacher in English and German before his career as a full-time professional referee.
Before becoming a full-time referee he combined it with a career as a paramedic.
She was hired as a replacement official in 2012 during the lockout of full-time referees which began in June.
One of the most immediate changes is that U.S. Soccer hired the first full-time professional referees in league history.
Williams started refereeing snooker matches during the mid 1960s, leaving the civil service in 1981 to become a full-time referee.
- I am a full-time civil litigator and a full-time referee.
He has been a full-time referee since 1998 and became an international referee in 2007.
Before becoming a full-time professional referee, she worked as an advertising salesperson and as a job recruitment agent.
His other occupation was as a police officer, eventually giving this up to become a full-time referee.