In men’s lacrosse, players can be awarded penalties of two types by the referee for rule infractions.

     Personal fouls always result in the player serving time in the penalty box, located at the side of the field between the opposing teams’ interchange benches. These penalties can last one, two, or three minutes at the referee’s discretion. Two and three minute penalties are usually reserved for the most serious slashing or unsportsmanlike conduct fouls.

     Technical fouls are less severe and result in 30 seconds being served only if the foul was committed while the opposing team was in possession of the ball. If there was a loose ball situation or the player’s team was in possession at the time of the foul, they only result in a turnover. Technical fouls are "releasable," meaning that a player may return to the game without spending the entire duration of his penalty in the box if the opposing team scores during the penalty. Fouls form an important part of men’s lacrosse as while a player is serving time, his team is ’man down’. At this time his defense must play a ’zone’ while they wait for the penalty to expire while the attacking team has its best opportunity to score.