Amazon delivery drivers and Starbucks baristas are on strike in a handful of U.S. cities as they seek to exert pressure on the two major companies to recognize them as unionized employees or to meet demands for an inaugural labor contract.

(Reuters) -Starbucks workers have expanded their strike to four more U.S. cities, including New York, the union representing over 10,000 baristas said late on Saturday. The five-day strike, which began on Friday and initially closed Starbucks cafes in Los Angeles,