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.

Teamsters union says Amazon workers at seven warehouses plan to walk off the job Thursday morning in multiple states.

The Staten Island Amazon facility, known as JFK8, employs more than 5,000 workers, and about 100 of them joined the picket line early Saturday.

The Amazon workers who walked off the job at warehouses across the country at peak season are trying to establish a union beachhead against one of the most important — and most anti-union — employers in the world.