The high level and volatility of the New Zealand dollar are barriers to nearly half of all export firms making money overseas, new figures show.
A study by Statistics New Zealand shows that, in the year to August 2011, the volatility of the dollar or its high level hurt 46% of export firms.
In agriculture, forestry and fishing, 66% of firms faced significant barriers.
Other industries such as food manufacturing, tourism and education were also badly affected.
Green Party co-leader Russel Norman says the National-led Government can no longer ignore the impact of the dollar on the country's exporters.
Dr Norman says the dollar causes more problems for exporters than any other factor, including tariffs firms face in overseas markets.