Bus drivers in Auckland are not ruling out further industrial action if a new round of negotiations with the city's major bus company fails.
Negotiations between the 900 drivers and New Zealand Bus are to resume on Wednesday.
The Combined Unions say the two parties have made some progress since the buses were off the road for a week earlier this month.
However, they says Wesdnesday's negotiations will be the most telling.
The two parties are in dispute over pay and a declaration on the case by the Employment Relations Authority has been rejected by bus drivers.
The unions say the drivers reserve their right to strike if the negotiations fail.