Prime Minister John Key says the loss of up to 2000 postal jobs is the "brutal reality" of people sending fewer letters.
New Zealand Post announced yesterday that it expected to axe the jobs in an attempt to safeguard its future options.
Chairman Sir Michael Cullen said the organisation would focus on logistics and financial services, innovation in its mail and retail network, and lowering costs.
The changes, which have been slammed as "simply cruel" by the posties' union, will start to be implemented next year.
Mr Key acknowledged it was a difficult time for everyone involved, but said it was the "brutal reality" of people sending fewer letters.