Morin graduated in commerce from the Collège Saint-Joseph in La Baie in 1958.
Morin was a municipal councillor from 1980 to 1984 and then was the mayor of La Baie from 1984 to 1988.
He ran for election in Dubuc in 1989 and won, he was re-elected without any difficulty in 1994 as the Parti Québécois formed the government.
He was the parliamentary secretary to the minister responsible for the Saguenay–Lac-Saint-Jean region in the Bouchard government.
[1] Morin died in La Baie on 9 December 2024, at the age of 84.