Norske Skog will close its Tasman Mill at the end of June, with 160 staff to be made redundant.
The Norwegian-based pulp and paper company had met with employees in May to begin consulting on the future of the operation.
The decision to cease production on June 30 followed a Strategic Review which was commissioned in September last year.
Eric Luck, Norske Skog's Regional President, said the ongoing secular decline of the newsprint industry had been the key reason for the decision.
"I know that today's decision is disappointing and sad for many people. It's the end of an era, but the structural change in the newsprint industry provided no viable alternative for paper production at Tasman.