Far North lines company Top Energy is asking staff to take voluntary redundancy after cutting the number of workers it plans to lay off from 17 to eight.
However, if eight volunteers can't be found the company will start a selection process to decide which jobs will go. A final decision is due on April 20.
Top Energy announced last month it planned to cut up to 17 jobs, mostly from the Puketona and Kaitaia depots.
Chief executive Russell Shaw said the layoffs were necessary because of a downturn in contracting work in the Pacific, the near completion of a major network upgrade, and new health and safety rules which had forced the company to change the way it carried out live line maintenance.
The consultation period was extended by a week at the request of the union E Tu, with the decision to lay off eight staff announced this week. The affected positions are in management, field services, administration, construction and planning functions.