"We're going to be running the business a bit differently going forward," said chief executive Barry Hibbert.
"We have fewer sites now and all of them are running very efficiently, so we don't necessarily need people doing equivalent jobs at each plant."
Group operations director Peter Andreou left the company last week to take up a new role outside the industry and will not be replaced. Petty managing director Chris Bowen is also leaving the group.
Hibbert said details of the new structure would be finalised over the next few weeks and consultations are underway with the staff involved. He said that while the recession had "definitely bottomed out", there was no sign of any improvement in trading conditions beyond some seasonal improvement.
Acorn Web Offset director of operations Mark Walkington, who worked under Hibbert in the 1990s when Hibbert himself was managing director at Petty, is set to re-join the group in one of the new-style operational roles being created.
Garnett Dickinson group managing director Nick Alexander said management across the two Garnett Dickinson-owned web offset plants would be re-jigged as a result.
"We're disappointed to see Mark go and wish him well, but it does give us an opportunity to merge the skill sets of the businesses," he added.
Polestar cuts top jobs in bid to reduce costs
Polestar is implementing a leaner management structure across the group as part of a cost-saving drive, with some director-level roles going as a result.
