Toronto high school teachers have reportedly voted in support of strike action with the Toronto District School Board.

"This vote shows that Toronto high school teachers are very serious about getting a collective agreement and frustrated with the Toronto District School Board's violation of the conditions stipulated in the Provincial Framework Agreement," said Doug Jolliffe, president of the District 12 bargaining unit for the Ontario Secondary School Teachers Federation (OSSTF) in a news release issued Tuesday evening.

The union did not release a breakdown of the vote by its 6,500 members. However, some media outlets are reporting the vote was more than 80 per cent in favour of strike action.

Jolliffe told ctvtoronto.ca that it will be business as usual in Toronto high schools on Wednesday.

"As long as the (provincial framework) is in place, there will be no job action," he said. "We don't want to take a job action, but we want the TDSB to know that if they turn down the framework ... then there will be trouble."

The teachers are deadlocked with the Toronto District School Board over the issue of "additional professional assignments."

Jolliffe said those could having teachers do things like check on washrooms or parking lots.

In February, the teachers charged District 12 with bargaining in bad faith, claiming the board is trying to stray from the provincial framework for bargaining on the issue.

They had a deadline at that time of Feb. 5 to come to an agreement.

In a news release issued Tuesday, TDSB chair John Campbell said a Feb. 2 memorandum to the board from the provincial education ministry indicated the board was within its rights to ask for more supervision time.

The board wants 30 more half-periods per year from teachers, which it said works out to about eight minutes per day.

Under the current contract, teachers' hall duty is limited. Principals are also limited in how many times they can ask their staff to fill in for an absent colleague.

"We have the lowest contractually required supervision in the province," said Campbell, referring to school boards in York, Peel and Durham regions.

"We're not looking for anything from our teachers that boards across the province haven't been able to obtain. We're not looking to take away from preparation time, we're just looking to have teachers take a more active role."

But Jolliffe said the framework agreement states the maximum number of APAs embedded in current collective agreements won't be changed in future collective agreements.

"And the second part of that is change to the restrictions on the use of APAs shall be introduced in the new collective agreements," he said.

Both parties have to agree to changes, but "we haven't," Jolliffe said. "They want to try to increase teacher workloads, and that's what we're not going for."

All other school boards have settled without violating the provincial framework. he said.

The contract would offer a 12.5 per cent wage increase over four years.