Teachers will join other public servants in Launceston on Wednesday to attend a stop work meeting scheduled for Civic Square.

The planned industrial action has disrupted school services and schools in the North will open later than usual on Wednesday.  

It is the third time during the industrial dispute that schools have been impacted by the stop work meetings.

Schools in the North have previously closed early and opened later due to the planned rallies and meetings.

A Metro Tasmania spokesman said Metro services across the state would operate to their normal timetables.

"Given the varying arrangements individual schools will make, and in order to provide normal services for non-government students and the wider community."

"Students requiring travel outside of normal school start and finish times will need to use general access services to complete their journeys," the spokesman said.

However, about 50 general services will be disrupted in Launceston from 9.50am until 1.30pm.

10.30am and 1.30pm as Metro hosts its on stop work meeting as part of wage negotiation.

About 106 general services in Launceston will not be operating between 10.30am and 1.30pm.

A stop work meeting was held by Metro in the North-West on April 2, with about 50 services impacted.

AEU state president Helen Richardson said the government's updated offer for teachers only had a 0.25 per cent pay increase on the last one and there were no new solutions to ease teacher workloads.

What do you think about the industrial action? Have your say here.

"Teachers are extremely frustrated that the government has sought to distract from education issues and is instead fixated on playing politics at every turn and lecturing teachers, support staff and principals about values and how to run their own union," she said.

Education Minister Jeremy Rockliff said the union was not acting in good faith in not conducting a "full, properly conducted ballot" of teachers on the government's latest offer.

"Our new offer includes a 7 per cent pay rise over three years and new specialist teachers on top of our previous commitment for 250 more teachers and 80 additional teacher assistants."

A State Growth spokesman said the department had contacted all bus operators to outline the changes to school hours in light of the planned industrial action.

The spokesman said the department had requested operators to make adjustments to timetables to cater for the late opening or early closure of schools.

"State Growth has asked bus operators to liaise with schools directly to let them know what timetable will be operated for each service. The schools and bus operators will work together to notify students and parents.

"Bus contractors are not contractually obligated to adjust their timetables for industrial action. Please note that it will not always be possible for contractors to change bus timetables, as some buses interchange with other buses, and some buses cater for both government and non-government school students."

Treasurer Peter Gutwein claims union action in Tasmania was about "supporting Federal Labor's election campaigns".

He said the AEU should hold a secret ballot of its members.

"Our offer addresses teacher workload concerns, hires more staff, supports principals and provides a fair and affordable seven per cent pay rise over three years for all staff," Mr Gutwein said.

"What's more, we now know that even when the AEU has claimed to consult their members, they've failed to allow a proper, democratic secret ballot where public servants can have their say without intimidation and stand-over tactics from unions."