[2] L'Ecuyer's first Quebec Major Junior Hockey League game came in the 1999-00 QMJHL season, when he worked as a linesman.

[3] Before the start of the 2002-03 CHL season, L'Ecuyer was hired to become a full-time referee for the Central Hockey League.

[6][7][8] L'Ecuyer worked in the American Hockey League on a part-time basis starting at the beginning of the 2003-04 AHL season.

His first game in the league occurred on 11 October 2003, when the Utah Grizzlies and the San Antonio Rampage played at the AT&T Center.

[12] On 11 October 2007, he made his National Hockey League debut, when he officiated a game between the New York Islanders and the Toronto Maple Leafs at the Air Canada Centre.