Starbucks workers around the U.S. have begun a three-day strike.

Employees are demonstrating outside three Starbucks locations in Ann Arbor on Thursday.

Starbucks workers at more than 100 U.S. stores walked out on strike Thursday.

Starbucks workers at more than 100 U.S. stores walked out on strike Thursday.

On Monday afternoon, Starbucks workers at the 5655 E. Pickard location found out they had won their union election.

A vote by Apple store employees in a Baltimore suburb marks the latest labor drive at big companies in recent months.

Federal labor officials are accusing Starbucks of unfair labor practices at its stores in Buffalo, New York, including retaliation against pro-union employees.

Federal labor officials have asked a judge to force Starbucks Corp. to reinstate three union activists at its Phoenix location, alleging that the coffee giant engaged in unfair labor practices practices.

Starbucks employees in Ann Arbor are the latest to join a national effort to unionize.

Employees at a Starbucks in suburban Phoenix voted Friday to form a union, becoming the first store outside New York to organize.

Workers at three Starbucks stores in Buffalo, New York, will hold union elections next month after winning a case before the National Labor Relations Board.