Hundreds of drivers at an Amazon facility in Skokie launched a strike Thursday morning, potentially disrupting holiday deliveries in an effort to get the online retailing giant to recognize their affiliation with the Teamsters union and negotiate a labor contract.

Amazon workers began a strike at a strike Thursday in Skokie.The strike was deliberately authorized in the midst of the busy holiday delivery season nationwide for a reason—with the Teamsters Union pushing the company for a contract.

With less than a week before the holiday shopping rush ends, Amazon workers in Skokie launched a strike this morning and joined other striking workers at six of the online retail giant’s facilities in New York, Atlanta and California.