A rolling strike of Starbucks baristas began Friday and grows to include about 300 of the coffee giant's shops across the U.S.

A Starbucks barista strike is expanding to some 5,000 workers at what organizers said was more than 300 stores in 45 states, just as the company's busy holiday stretch begins. Though it still only represents approximately 3% of all U.

The ongoing Starbucks union workers' strike has now expanded to a dozen states, union representatives confirmed to USA TODAY on Monday.