Eighty staff at Rotorua Lakes Council council-controlled organisation InfraCore have indicated plans to strike after their "bottom line wasn't met" during union negotiations.
Union officials from the Northern Amalgamated Workers Union and First Union have indicated the impending strike action by its members.
However, InfraCore chief executive Tim Hammond said the company had not been formally notified of the action and would not confirm whether he was aware of any plans by workers to strike.
"There has been ongoing negotiations over a period of months. We have been back and forth on various points and have offered to go to mediation to try and resolve the situation."
Northern Amalgamated Workers Union organiser Robert Popata said the offer of mediation had been accepted, and a date set for next week, but there was still an intention to strike.