Career
Marois started his National Hockey League career with the New York Rangers in 1978. He also played for the Vancouver Canucks, Quebec Nordiques, Saint Louis Blues, and Winnipeg Jets. He left the National Hockey League after the 1992 season.
He served one season as a player-assistant coach of the Hamilton Canucks of the AHL in 1992-1993 before retiring as a player.
He was most recently an amateur scout with the Carolina Hurricanes. He is currently employed as an amateur scout with the Detroit Red Wings.