ON-ICE OFFICIAL

REFEREE:
Wears orange armbands. He supervises the game, calls the penalties, determines goals and handles face-offs at center ice to start the game, and after a goal is scored.

LINESMAN:
Two are used. They call offside, icing and handle all face-offs after the opening face-off. They do not call penalties, but can recommend to the referee that a penalty be called.

OFF-ICE OFFICIAL

GOAL JUDGES:
One sits off-ice behind each goal and indicates when the puck has crossed the goal line by turning on a red light. The referee can ask his advice on disputed goals, but the referee has final authority on whether or not a goal has been scored and can overrule the goal judge.

OFFICIAL SCORER:
He determines which player scores and credits assists if there are any. He may consult the referee, but the scorer is the final authority in crediting points. There are 6-8 other off-ice officials with different responsibilities, mostly in statistics keeping.