Before turning pro as a mixed martial artist, St-Pierre worked as a bouncer at a Montreal night club in the South Shore called Fuzzy Brossard and as a garbageman for six months to pay for his school fees.
Før han blev professionel MMA-kæmper, arbejdede St-Pierre som udsmider i en natklub i Montreal South Shore ved navn Fuzzy Brossard og som skraldemand i 6 måneder for at betale for sin skole.