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.

Workers at some Starbucks stores started a five-day strike Friday in three U.S. cities, including Chicago, to protest lack of progress in contract negotiations with the company. S

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