About 170 workers will lose their jobs at the plants in Bainville and Laval.
In November the company said it will close its plant at Saint-Hyacinthe and in October laid off 177 management staff.
“The decision to close our two processing plants in Blainville and Laval is part of the reorganization that began more than a year ago and is due to the ability of other facilities to produce the same products and therefore achieve savings and efficiencies," said president and chief executive officer Yanick Gervais.
"I know that this is a difficult decision for the affected employees, but I want to reiterate our firm commitment to relocate any who wish to do so in our other Olymel facilities.
“I believe that today's announcement should enable us to achieve our operational optimization objectives more rapidly in the context of an unfavorable economic conditions, with rising raw material costs, labour shortages and the weakness of certain markets all affecting the company’s profitability."
The Blainville plant employs 134 workers and Laval 34. They specialized in the production of hams, pâtés and deli meats marketed under various brand names, including La Tour Eiffel and Nostrano.