Amazon workers affiliated with the Teamsters union launched a strike at seven of the company’s delivery hubs less than a week before Christmas. The Teamsters said the workers, who voted to authorize strikes in recent days, joined picket lines on Thursday after Amazon ignored a Sunday deadline the union had set for contract negotiations. The company says it doesn’t expect the strike to impact holiday shipments. Amazon delivery drivers in Skokie, six other facilities go on strike: ‘We’re the ones who move the packages every day’ Amazon has a couple hundred employees at each delivery station.