NBC News has fired popular 'Today' show host Matt Lauer after receiving a detailed complaint from a colleague about inappropriate sexual behaviour in the workplace.

Land Information Minister Eugenie Sage says unless disgraced United States TV host Matt Lauer has breached the conditions of his Overseas Investment Act consent over his recently bought high country pastoral lease, it might be impossible to revisit access through the property.

NBC fired Lauer on Thursday following an allegation that he made inappropriate sexual contact with a subordinate, and he is also in hot water with Kiwi outdoor enthusiasts who can't access Hāwea Conservation Park through his Hunter Valley Station leasehold station.

In March, Lauer was given the go-ahead by the Overseas Investment Office (OIO), to buy the 10,759-hectare high-country station's lease, which extends from the northern shores of Lake Hāwea into the Hunter Valley.

Fired NBC host Matt Lauer is being asked to do the right thing and provide access to Hāwea Conservation Park.

Foreign applicants also have to pass a "good character" test to be given the green light. Sage said so far there were only allegations against the broadcaster.

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"The OIO is aware that allegations have been made in relation to Matt Lauer and that he is no longer working for NBC News in the USA. The office is discussing this with his representative and is seeking further information," Sage said.

The 100,500-hectare Hāwea Conservation Park in Central Otago, access to which has been stymied by the Overseas Investment Office and owner Matt Lauer.

Not only does Lauer have to abide by the consent conditions laid down by the OIO as part of the sale; he also has obligations as a Crown pastoral lessee.

Federated Mountain Clubs and other groups are upset that the OIO did not force Lauer to provide access to the 105,000ha Hāwea Conservation Park.

Club president Peter Wilson said any chance of access was "killed" about six months ago when the OIO refused to enact the recommendations of the Walking Access Commission.

"There's no chance of an easement until we can get the Government to correct its past mistake, and we'll be asking them to do so.

"We're also calling on Matt to do the right thing and to allow an access easement to be put over his land."

Wilson said the easement would provide access for a variety of recreationists, including trampers, fishermen, boat users, and hunters.

When it made its decision earlier this year, the OIO said the station was a working farm so public access was difficult to provide.

Sage said any decisions over enforcement would have to be taken by Land Information New Zealand (LINZ), which also runs the OIO.

"I have asked LINZ officials for more information on the access issue. I understand it has been ongoing for some time, since before Mr Lauer bought the lease.

"It is up to agencies to undertake any enforcement action under their legislation. This would of course be conducted independently of Ministers."

As part of the sale conditions, Lauer and his wife Annette said they would invest at least $1.2 million over five years in farm developments and $400,000 to increase stock numbers.

The OIO did not disclose how much Lauer paid for the lease, but it was valued at $13.5m. The property had been on the market for five years but no-one had been prepared to buy it at the undisclosed asking price until the Lauers' bid.

Sage said the new directive issued to the OIO would see environmental factors given more weight from December 15.

"What this shows is that the regime under the last Government was just a rubber stamp."

Speaking to Tonight Show host Jimmy Fallon recently, Lauer raved about New Zealand.

"It's the most sensational country on the planet. It's beautiful," he said.

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