Amazon workers at four California facilities will join their striking colleagues on the picket line Thursday morning after reaching a stalemate during labor negotiations.

A spokesperson for Amazon said the union claims they represent “thousands of Amazon employees and drivers” when they don’t.

Workers at Amazon fulfillment centers in Palmdale, Industry, Victorville and San Francisco on Thursday joined a multicity strike led by the Teamsters sweeping several warehouses across the country.

The International Brotherhood of Teamsters, representing 1.3 million workers across the U.S., Canada and Puerto Rico, announced their members in Palmdale, Victorville, Industry, and San Bernardino voted to authorize strikes -- a move that came after Amazon ignored a Sunday deadline to come to the bargaining table,

Delays may impact the arrival of packages ahead of Christmas, but wide-scale delays to deliveries appear unlikely.

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

With Christmas two days away, workers at four Amazon warehouses in Southern California are on strike Monday on claims the corporate giant refuses to recognize their union and negotiate fair contracts.