Drivers for the largest bus company in Auckland have voted against a revised pay offer of $20 per hour.
First Union spokesperson Karl Andersen said there was a good turnout for a vote over whether to accept NZ Bus's collective employment agreement.
He said the drivers feel the offer of $20 per hour is still too low and that the plan to give them the rise in three stages will take too long.
"The drivers aren't happy that it's taking so long, but it's a two-way process and at the end of the day both parties have to agree. Quite clearly the drivers are telling us the offers that have been made are just not enough to sustain them and their families."
First Union and the Tramways Union will meet with delegates on Monday to talk through their next steps.
NZ Bus has not yet commented.