A four-day strike by Air New Zealand cabin crew will go ahead on Thursday.
Further talks have been ruled out between Air New Zealand subsidiary Zeal 320 and its employees.
Some 240 union members are to strike after almost eight months of negotiations over pay between the EPMU and Air New Zealand.
The EPMU says Zeal employees are paid up to $30,000 per year less than cabin crew working directly for Air New Zealand.
Air New Zealand chief executive Rob Fyfe says Zeal staff will be locked out during the industrial action but says the 20,000 customers travelling over the strike period won't be affected.
The union says it's unlikely the two parties will return to mediation until after the strike.