Will people who don't wear masks in public be fined?
The order provides that people who don't comply can face a fine of up to $300.
But Baker said he is mainly leaving enforcement to cities and towns. Some have already put fines in place, including ones that are higher than the state's fine.
When does this order expire?
That's up to Baker to decide.
"I think we all believe that as part of the strategy around some sort of reopening, people are going to need a mask or a face covering if they're going to be close to people. You can't always stay six feet away," the governor said. "If everybody's wearing a mask, it will dramatically reduce the opportunity and possibility of spread."
"This is going to be a way of life," he added. "No ifs, no ands, no buts, no doubts."