An all-day bargaining session between the the Met Council and Metro Transit workers failed to reach a deal, but both sides agreed to meet again Nov. 13.
Council earlier offered a $3.6 million package that includes pay raises and a one-time "heroes" payment that averages out to $1,500.
The union overwhelmingly rejected the offer while authorizing a strike.
More than 100 union members gathered in the cold in front of the Bureau of Mediation Services in St. Paul's Midway-Energy Park district to show their support.
"What we are asking for here today is full negotiations," said Michelle Sommers, Amalgamated Transit Union international vice president, and member of the local chapter.
"No more BS," she said. "It's time to get it done. This contract is expired. It's overdue. And they don't care."
Met Council officials argue that they have been bargaining in good faith.
Union members talked about the need for compensation after going to work daily and keeping the buses and trains running through the coronavirus pandemic.
"You all have been doing what you've done to protect yourself," said Ryan Timlin, local union president. "It's extremely important that you are here. You're here today to let Metro Transit know you've been paying attention to what's going on in the negotiations."
Surrounding a table full of snacks and huddled around portable fire pits, the workers also called on Metro Transit general manager Wes Kooistra to attend the contract talks.
"He's not here today," said Timlin, sparking a chant of "Where's Wes?"
The 2,400 union members include bus and train operators, as well as mechanics and other personnel.
The union was also offered an additional $3 an hour for pandemic hazard pay.