More than 50 jobs are to be lost at Landmark Media, the owner of the Irish Examiner.
Staff were informed of the news at a meeting in the newspaper's Cork office at around 12pm.
A total of 560 people are currently employed by the group.
It is understood that roughly half of the jobs to go will be from the Cork office and the other half will be from the group's regional offices.
It is believed the jobs being shed from the Cork office will be voluntary redundancies, while those from the regional offices will mainly be compulsory.
The type of jobs to go will be across the various disciplines.
Landmark Media Investments is the media group that owns the Irish Examiner and regional papers.
It took control of the newspapers as part of a restructuring at Thomas Crosbie Holdings in March 2013.
The group owns Cork's Evening Echo, Waterford News & Star, Wexford Echo, the Carlow, Kildare and Laois Nationalist series, Western People and the Roscommon Herald, as well as Breakingnews.ie and Recruitireland.ie.
It is understood the redundancies are to be in the areas of sub-editing, production and administration.
The group is also seeking cost-cutting efficiencies and staff believe this could mean a reduction in holidays, increased working hours, adjustments to shift patterns and a reduction in maternity leave.
Briefings with staff continued throughout the day.
The Irish branch of the National Union of Journalists said it is disappointed by the decision by Landmark Media.
The union's Nicola Coleman said: "We are gravely disappointed at the announcement and by the manner of the announcement.
"The union will be consulting our representatives and members at local level and will be seeking to minimise the job losses.
"We are opposed to compulsory redundancies and would expect consultation on a voluntary redundancy package."