CHICAGO (CBS) -- Starbucks workers were back on the picket line in Chicago Sunday afternoon—as they continue a five-day strike Friday to protest lack of progress in contract negotiations with the company. Baristas at the store at 5964 N. Ridge Ave.

Across the country, baristas at more than 300 cafes were striking, according to their union, Starbucks Workers United.

The strike, which began Friday in Los Angeles, Chicago and Starbucks’ hometown of Seattle, continued spreading to stores across the country over the weekend.