He inherited his father's innate sense for business practice and perfect command of English which enabled him to become a comic artist of international caliber.
On 25 October 1935, Chartier landed his first professional contract with his first comic, the Sunday BouBoule, published in La Patrie until 21 March 1937,[1] scripted by journalist René Boivin.
[1] After the attack on Pearl Harbor, the United States entered the World War and, as his renewed work permit meant he could be forced to join the U.S. Army, Chartier decided to return home, where offers were not long to wait for.
The first contract was from the Wartime Information Board in Ottawa in which he made comics and panel gags in government publications distributed to entertain the soldiers.
Inspired by the rural audience targeted by the magazine, his own family and social experiences of the picturesque Saint-Jean-de-Matha, with Onésime Chartier created a chronicle of country life and, implicitly, a history of the evolution of the mentality and society of Québec.