Sheet metal workers are protesting on Montrose Road in Niagara Falls.
Members of Sheet Metal Workers' & Roofers Local 30 from Whitby and Toronto climbed aboard buses this morning, travelling to Niagara Falls to walk the picket line.
Sheet metal workers in the province have been on strike for about a month now.
One of the main sticking points in negotiations has been the length of the workday - the union wants to keep working for nine hours a day, four days a week.
Employers want a full five day, eight hour work week.