Wellington bus passengers experienced 70 last-minute cancellations of Metlink services operated by NZ Bus on Wednesday.
Metlink general manager Scott Gallacher said they were working with NZ Bus on how they would address the situation.
"Cancellations are never a welcome sign but it's doubly disappointing for passengers who get hit with last-minute cancellations," he said.
"Metlink successfully operates around 22,000 bus trips each week and we pride ourselves in delivering a great public transport network for our communities.