"At this stage, I'm hopefully optimistic that they will find a way through, but that's for them to now work through and come back to us once they have the final and full numbers," Adams said.
Chorus blames it difficulties on a recent decision by New Zealand's Commerce Commission to make Internet connections cheaper for most people next year. The commission decided that Chorus will be able to charge Internet service providers a maximum $28 per month for each copper line connection, down from $37 a month.
The commission sets the price because Chorus owns a near-monopoly on the cable infrastructure. Commissioner Stephen Gale said the price was based on comparisons with other countries, in particular Sweden.
But Chorus said the price reduction means it will have to sell connections below cost. The company said the decision will cost it more than $100 million a year in lost revenue and lower the amount it can borrow to build infrastructure.
Chorus Chief Executive Mark Ratcliffe said in a statement to the New Zealand stock market Thursday that the company would immediately begin to renegotiate its contracts with the government agency overseeing the work.
"We look forward to resolving these issues and continuing to focus on this world-leading fiber infrastructure build," Ratcliffe said.
Chorus shares were down about 4 percent Thursday and were trading at 1.38 New Zealand dollars ($1.13). The shares have lost more than half their value since September.