The union representing some Auckland bus drivers says they plan to work to rule over contract negotiations.
At a stopwork meeting last Friday, 700 NZ Bus drivers rejected the company's pay offer and decided to take industrial action.
The drivers, represented by the Auckland Tramways and First unions, had been negotiating for more pay for four months.
First says the work-to-rule means drivers will follow all policies and procedures to the letter.
Tramways Union president Gary Froggatt says it should disrupt management only, and not passengers.
NZ Bus says it is not yet aware of the union's decision.