"The nature of a contracting business is that you have to fully utilise the number of field staff you have because the cost of carrying un-utilised staff is high and impacts on business profitability."
He said the changes were relatively minor considering Northpower employed 1350 staff overall in Northland, Auckland, Melbourne and Perth.
Cost-cutting measures started six months ago to ensure Northpower was appropriately-resourced to cope with current and future workload.
Mr MacMillan said in terms of redundancies, Northpower had laid off eight linesmen and office staff based in the Whangarei office and some could be re-deployed within the company.
Three mechanics were affected by the company's garage closure in Whangarei and one in Dargaville at the end of March.
Nine linesmen were laid off in Melbourne in March while other redundancies occurred in Auckland and Wellington.
The Australian market, he said, had been tough to work because of an economic downturn and network companies withholding forecast work.
Mr MacMillan said the dynamics in the contracting market in Melbourne had changed markedly in the past 12 months. "A number of major players have suffered and or exited the market which is why we are continuing to review the Victorian operation of our Australian business," "