Amazon.com Inc. workers at the company’s sole unionized warehouse in the US joined a broader strike by the International Brotherhood of Teamsters.

The union is aiming to pressure the online retailer by threatening delays in package deliveries during the critical holiday season.

Union organizers have called an end to a five-day strike against Amazon by about 100 Atlanta drivers who joined workers at hundreds of other locations around the country.

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

Amazon workers have walked off the job at seven facilities throughout the U.S., including the company's Queens location in New York City, as they push for contract talks with their union.

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

The Teamsters' strike against Amazon began Thursday morning at several facilities in New York City, Atlanta, California, Illinois and elsehwere.

The International Brotherhood of Teamsters said workers at seven Amazon facilities will begin a strike on Thursday morning.

A statement said that the pickets have broken for the holiday. Bill Gates Answers Why He Doesn't Just Voluntarily Pay More In Taxes – 'People Pay Taxes As An Obligation Of Law … Not Out Of Charity'

Amazon and Starbucks workers strike for union recognition and better working conditions. Labor leaders prepare for potential rollback of worker protections under Trump administration. California unions seek state-level safeguards against weakening federal labor regulations.

In North Alabama, the Teamsters have extended picket lines to Amazon facilities in Huntsville, “delaying some shipments and letting the workers here know their rights, and encouraging them to join the nationwide movement to organize Amazon.” The NAALC statement encourages North Alabama Amazon workers to “heed the call” and unionize.