Public high school teachers in Ontario will begin a work to rule campaign next Tuesday.
The Ontario Secondary School Teacher' Federation says it will start information pickets along with a limited withdrawal of administrative services such as not providing comment on report cards, participating in EQAO testing or unpaid staff meetings.
OSSTF says it's the first time in 20-years the union has staged job action.
Central bargaining with the school boards and province continues.
They have been at the bargaining table for eight months.
Public elementary teachers will also start a work to rule campaign on Tuesday.
The government is backing off a plan to mandate high school students from taking four online courses to graduate.
Education Minister Stephen Lecce says students will now need to take two e-learning courses, starting with those who will graduate in 2023-24.
The four mandatory online courses along with the increase class sizes have been major sticking points in contract talks.
- with files from AM800's Kathie McMann