Detroiters are without bus service for a second day, after drivers walked off the job Friday morning.
Union leaders say the city hasn't taken enough action to protect them from COVID-19 or from passengers who become confrontational when asked to wear masks.
Mayor Mike Duggan says he received no complaints prior to the strike, and it appears it was triggered by one incident that happened on September 8th.
A video shows a bus driver attacked and beat a passenger for approaching him without a mask. The driver was suspended.
"It appears that the union leaders have taken the position that if the suspension is not rescinded immediately, they're not going back to work ," Duggan said Saturday. "And that's disturbing on so many levels. Number one, it's illegal and it violates the contract."
Duggan says he has worked with unions for 30 years and this is the first time a union has walked off the job over a disciplinary issue that was still going through agreed-upon procedures according to a contract.
Talks between the city and the bus drivers union are expected to resume Monday.