Opposition parties are calling on the government to help manufacturers and exporters, saying the high exchange rate is forcing them to cut jobs.
They're using the latest unemployment statistics, which show an unexpected increase, to back their case.
"It records a loss of 10,500 jobs in the manufacturing sector for the June quarter," NZ First leader Winston Peters says.
"International research shows manufacturing jobs produce the highest value - for every job created, two to five further jobs are created elsewhere."
Mr Peters says the New Zealand dollar is dangerously over-valued and exporters are being priced out of international markets.
NZ First has drafted legislation which would change the Reserve Bank Act so it could intervene more easily to control the exchange rate.
Labour's finance spokesman, David Parker, says the exchange rate is one of the "fundamental problems" the government isn't dealing with.
"The current high dollar is damaging exporters and costing jobs every week - especially in high value sectors like manufacturing," he says.
The household labour force survey, released on Thursday, shows unemployment rose just 0.1 of a percentage point in the June quarter to 6.8 percent.
Economists had expected it to drop to 6.5 percent.
There are now 162,000 people out of work, and Mr Parker says that's an increase of 57,000 since National came to power in 2008.
Employment Minister Steven Joyce says the Canterbury earthquakes are distorting the figures.
"Excluding Canterbury, employment rose by 15,000 in the quarter and unemployment fell," he says.
"This shows the unavoidable impact the earthquakes have had on the economy."
NZN