A walkout at Starbucks is expanding to more than 300 U.S. stores on Tuesday, with roughly 5,000 workers expected to join the five-day labor action that comes to a close later in the day, according to the employees' union. Workers at 60-plus stores walked ...

The union representing Starbucks workers said its five-day strike will conclude on Tuesday with the strike spreading to more than300 stores, adding more establishments in metro areas.

A five-day strike by Starbucks baristas had closed 59 stores as of Monday afternoon, according to the union organizing the workers.