The union that represents more than 11,000 Starbucks workers said it plans on launching a five-day strike beginning Friday morning. Why it matters: The holiday season is one of the company's busiest times of year, and the stoppages will hit three big markets — Los Angeles, Chicago and Seattle. • Their planned strike follows a work stoppage launched by Amazon warehouse workers Thursday morning. State of play: The union said Thursday night the walkouts will continue across the country, ultimately...