According to the NZ Media, there are job opportunities in New Zealand for skilled tradespeople in Christchurch as the city struggles to gain momentum rebuilding itself.
http://www.opportunitycanterbury.org.nz/
http://www.immigration.govt.nz/branch/londonbranchhome/workopportunitieschristchurch.htm
http://www.stuff.co.nz/business/industries/9104937/Christchurch-scores-Wellingtons-tradies
New Zealand traditionally has a healthy outflow of citizens to Australia but the Australian economy may be showing signs of slowing so it seems as if Kiwi emigration to Oz is slowing too. This is only an issue for new migrants to NZ if those who choose to stay are skilled tradespeople.
http://www.nzherald.co.nz/business/news/article.cfm?c_id=3&objectid=11112048