New York Mayor-elect Zohran Mamdani and Vermont independent Senator Bernie Sanders joined striking Starbucks workers on the picket line Monday to demand the coffee giant reach a fair contract with its unionized workforce after years of delay tactics.

Speaking outside a store in Brooklyn, Mamdani said New York is a “union town,” and vowed to continue joining pickets even after he is sworn in as mayor on January 1. Responding to a question from Democracy Now!, Sanders said Mamdani’s successful campaign for mayor was a blueprint for the Democratic Party, with affordability and workers’ rights at the center of the agenda. “We have the grassroots of America behind us,” Sanders said.

Starbucks workers at unionized stores across the United States launched an open-ended strike November 13 accusing the company of unfair labor practices. Starbucks Workers United has been bargaining for a contract with the company since early last year. Monday’s picket came just hours after Starbucks reached a $38 million settlement with New York City for labor violations including denying workers stable and predictable schedules.