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

Amazon warehouses in Southern California are on strike less than a week before Christmas. The workers went on strike early Thursday morning, claiming Amazon refuses to recognize their union and negotiate fair contracts.

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,