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.

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

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.

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 union announced Amazon workers would strike starting Thursday in five confirmed states ahead of the Christmas holiday, citing the company’s absence from

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 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'

Striking Amazon and Starbucks workers in California and elsewhere have long pushed for union contracts. The Trump administration is unlikely to be on their side.

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.