TVNZ chief executive Kevin Kenrick says the broadcaster must make changes to be more cost effective - and that means fewer staff.
"We are reviewing all parts of the business," he said. "For a sustainable business going forward, it will mean less staff."
Kenrick cited the changes happening in the media landscape and said the restructure was a way to prepare for the future.
"We're at the early stages now," he said. "But we will be making some changes in the next three to six months."
In December the Herald reported that the state broadcaster TVNZ spent more than $2 million in the past two financial years on "early termination" payments to top presenters and other newsroom staff. At the time, the business warned staff it needs to make radical changes to remain profitable.