Australia is New Zealand's biggest trading partner by a long way, taking 24 per cent of exports in the year to June 2010.
While the "lucky country" got through the global financial crisis better than many countries and its mining industries continue to boom, a decline has become evident in its domestic economy - particularly in the building sector.
This is already having an effect on New Zealand exporters, who benefited from Australia's economic resilience during the recession.
This month, tap and showerware maker Methven downgraded its full-year profit expectations by up to $3 million, largely because of a fall in Australian construction activity.
At about the same time, Fletcher Building - New Zealand's biggest listed company - said difficult trading conditions, particularly across the Tasman, would cut its first-half earnings by 10 per cent.