Duchesneau retired from CATSA in 2008 to become an adjunct professor in the faculty of social science at the University of Ontario Institute of Technology.

In the fall of 2011, Duchesneau leaked to the media a devastating 88-page report documenting cases of corruption and describing an entangled web of links between construction companies, organized crime, Transport Quebec and political donations.

[6] On August 5, 2012, five days after the start of the provincial election campaign, Duchesneau confirmed that he was going to run as a star candidate for the upstart Coalition Avenir Québec, led by François Legault.

Catherine Bergeron, Jacques Duchesneau, Romain Gayet, Annie-Clara Gravel, Michel Petit and Florence Scanvic have distinguished themselves by their outstanding involvement with the Comité Mémoire, formed in the wake of the École Polytechnique de Montréal tragedy.

They played a decisive role in organizing the 30th anniversary commemoration, notable for the participation of 13 Canadian universities, elevating the ceremony to the status of a major national movement and amplifying the message condemning violence against women.