Talks will resume on Monday to try to settle differences that led to a train strike in Wellington last week.
The strike halted all commuter trains in the capital for 24 hours - the biggest such action since 1994.
It was contested mainly over working conditions.
The strike led to talks between the two sides this week in the presence of labour relations mediators from the Ministry of Business Innovation and Employment.
Neither the Rail and Maritime Transport Union, nor the train management company Transdev, is speaking to the media.
But it is known they will resume talks on Monday.
The negotiations have taken place with both parties in the room with the mediators at the same time.
Nothing further is known except that the company has told its staff progress is being made and there will not be another strike at least until after the next round of talks.