When Sean O’Brien ran for the presidency of the International Brotherhood of Teamsters, he vowed to unionize Amazon. Building on the Teamsters’ creation of an Amazon division in 2021, O’Brien, who won the union’s top leadership in 2022, promised to prioritize organizing one of the largest and most anti-union companies in the United States. Led by Amazon division director and Teamsters Joint Council 42 director of organizing Randy Korgan, Teamsters have since been building ties with Amazon workers, both in the company’s warehouses and among its delivery drivers, but no new bargaining units resulted.

That changed on Monday, when the Teamsters announced that eighty-four Amazon delivery drivers and dispatchers in Palmdale, California, site of Amazon’s DAX8 facility, had unionized, and that the Teamsters Local 396 union had reached a tentative agreement, the first such agreement for any Amazon workers in the United States. The workers are employed by Battle-Tested Strategies (BTS), one of Amazon’s roughly three thousand delivery service partners (DSPs), which granted voluntary union recognition after a majority of workers signed union-authorization cards.

While the details of the contract won’t be released until members vote on whether to ratify the agreement, it “includes immediate pay increases, substantial hourly raises in the fall, provisions that hold Amazon accountable on health and safety standards, a grievance procedure, and other benefits,” said Korgan in a press release. Voting will take place over the coming weeks.