The proposal sees NZME de-merged from its Australian parent APN, and listed on the NZX and ASX in late June.
It would be the only listed NZ media company on the NZX and would be expected to feature within the NZ50 when Fairfax NZ's assets are folded in once the approval process is finalised.
Salt Funds Management managing director Matt Goodson said the addition of a large media company to the NZX would be welcomed by the sharemarket.
"We would absolutely welcome any listing of NZME in New Zealand," he said. "It's another company and another choice (for investors) and it will be fascinating to see what synergies can be brought if the discussions between APN and Fairfax lead anywhere," he said. Salt is one of New Zealand's biggest fund managers, with $1.45 billion in funds under management.
APN also announced it would raise about A$180 million through a fully underwritten right issue. The company is also proposing to undertake a one-for-seven share consolidation. Proceeds from the offer will be used to repay a portion of APN's corporate debt and, if the demerger proceeds, "to facilitate the establishment of appropriate capital structures for APN and NZME".
Green Party MP Gareth Hughes says a proposed merger between NZME. and Fairfax is bad news for a broad media environment and shows there is a need for regulation to oversee media ownership issues.
Mr Hughes said a diverse and competitive media was important for democracy and the Commerce Commission was not allowed to consider issues such as the unique role of media companies.
"Many other countries have specific rules that prevent media monopolies from forming, but New Zealand doesn't. I think it's unlikely these Australian-owned media companies would even dream of proposing a virtual monopoly over newspapers in their home country, under current rules there."
He said countries such as Australia and the United Kingdom had criteria to oversee ownership rules, digital convergence issues, and local content quotas through Australia's ACMA and UK's OfCom.
"The people who lose out from a newspaper merger will be the journalists whose jobs are cut and citizens who want a choice about where they get their news from."
APN CEO Ciaran Davis said the merger of NZME and Fairfax's NZ business would provide "an exciting opportunity for our shareholders - particularly our new Zealand shareholders - to participate in the creation of a leading media business for New Zealanders".
NZME CEO Michael Boggs added "NZME has already demonstrated the significant benefits that can be achieved by combining news media, digital e-commerce and radio operations.
"This merger offers a compelling opportunity to develop these important media brands in providing relevant and innovative news, sport and entertainment content for New Zealanders long into the future."
The proposed NZME board will be chaired by former banker Sir John Anderson and include advertising supremo Peter Cullinane and Carol Campbell among its directors. Both Sir John and Cullinane are directors of NZME's parent company APN.
It is expected other directors will be added once merger approval is given.
Fairfax chief executive Greg Hywood said: "This is an important opportunity for all of our shareholders to be part of the future of content and journalism in New Zealand. The merger would enhance the position the businesses are in to continue to deliver high quality, local content to audiences now and in the future."
Fairfax NZ CEO Simon Tong said "As the tastes and habits of media consumers continue to evolve, so too do the needs of advertisers looking to reach these audiences. The depth and breadth of the combined business would be a win for audiences, and also enable us to create innovative solutions for advertisers based on the best of both of us."
The companies say their NZ businesses are "to a large extent" complementary, adding the expanded network of brands and channels will create an opportunity to deliver improved, innovative offerings to advertisers and audiences.
As a first step, APN shareholders will vote on the proposal to demerge NZME from its parent company at a special meeting on June 16.
If the proposal is approved, NZME will be listed on the NZX and ASX in late June.
In his email to staff, Boggs says the demerger will see NZME become a standalone New Zealand company listed on the NZ stock exchange with its own NZME board.
"I see this as a natural progression for us following the transformation of our business over the past year.
While APN and Fairfax Media are promoting the NZ merger plan as the "coming together as equals" it is subject to Commerce Commission approval.
An application is expected to be filed in the next four weeks. It will be "business as usual" for both companies until the commission gives its approval.
Labour Party commerce spokesman David Shearer said a merger would negatively affect media freedom in New Zealand.
"We have two major print media networks who are competing against each other, which is always good, and two massively popular websites, of the Herald and Stuff, competing against each other.
"I can't see any good coming out of merging this so that we have effectively one newspaper network for the entire country.
"It puts an enormous amount of power in the Fourth Estate into the hands of very few people and I hope the Commerce Commission sees it that way. Going on past records, I'm not that confident."
Broadcasting Minister Amy Adams said it was not for her to comment on the merits of mergers between private companies.
But she suggested that the Government would not stand in the way of a merger between NZME and Fairfax.
