The strike was expected to affect about 2% of all locations. A barista workers union is aiming to highlight alleged unfair labor practices.

Earlier, Starbucks said the union “prematurely ended” a bargaining session and called for talks to continue. The coffee chain has said it’s focused on improving workers’ experience and that baristas who work at least 20 hours a week receive $30 an hour, on average, when combining pay and benefits.

Key Takeaways The strike by some Starbucks baristas has expanded to 300 stores in the U.S., according to the union representing them.The union is demanding a higher minimum wage and other concessions from the company.