MINNEAPOLIS - Metro Transit workers are threatening to strike during the Super Bowl.

In a process that took place Sunday and Monday, the workers' union voted down the most recent contract offer from Metro Transit, with 93 percent against. That vote also authorizes a strike during the Super Bowl.

Union President Mark Lawson says the contract affects nearly 2,500 bus drivers, train operators and support staff.

And it's not only about wages and benefits, he says. Members are also concerned about driver safety.

"This contract does not address that at all," he said.

Lawson says he has been punched twice during his 12 years as a driver.

He says assault is a common occurrence, which is why they're urging Metro Transit to add special doors to shield drivers from unruly passengers.

Now that the union has turned down the contract, both sides will have until late January to come to an agreement.

The union is hopeful an agreement will be reached before the Super Bowl.

The Metropolitan Council sent KARE 11 a statement on Sunday, saying:

“We value the work of ATU members and their contribution to our region. We are currently negotiating in good faith through a mediator and are confident we’ll reach an agreement satisfactory to both parties.”