Keeping things clean will protect essential workers during the pandemic.
Two million students will be out of the classroom during job action.
A mediator has called off talks for now as the sides are too far apart.
The limits to salary increases violate their bargaining rights, they say.
Educators say they're pushing back against increased class sizes.
The previous collective bargaining agreement expired in July.
Workers could walk out as soon as Monday.
Enshrining the power to organize is a sure way to reverse the trend of shrinking paycheques.
The strike affects the Hyatt Regency, Pinnacle Harbourfront and Westin Bayshore.
They want Uber to recognize them as employees.