Sun Media Corp. is cutting about 200 jobs across the company, of which about a quarter will come from its editorial operations.
The company says it regrets the cuts but are necessary to ensure its sustainability in the face of the unprecedented changes in the print media industry.
The subsidiary of Quebecor Media Inc. has 36 paid-circulation daily newspapers and three free dailies as well as almost 200 community newspapers, shopping guides and other specialty publications.
Declining advertising revenues have hit the newspaper industry hard.
Publishers have moved to cut costs as digital advertising revenue has failed to make up the losses from traditional print advertising.
The latest cuts at Sun Media follow a move by the company earlier this year to slash 360 jobs and shut down 11 publications.
In that move, the company closed down eight community newspapers and its 24 Hours free daily papers in Ottawa, Calgary and Edmonton.