Environment Canterbury is warning bus users there will be major disruption to bus services in the greater Christchurch area on Thursday 27 October as many drivers will be attending a stop-work meeting.

Drivers from both bus operators will be attending the meeting, which has been organised by the Amalgamated Workers Union NZ (AWUNZ).

The meeting will take place from 11am to 1pm, during which time most bus services will not operate.

Services are likely to be impacted from 9am as buses start to come off route and Environment Canterbury expects all services to be operating as normal by 3pm.

School services will not be affected.

Environment Canterbury says customers should be aware that some trips may end at the bus interchange from around 9am as drivers head into attend their meeting.

Some services will operate again before 3pm. Public transport users should check MetroGo for the latest updates.