Approximately 3,200 members of the International Association of Machinists and Aerospace Workers (IAM) District 837 have voted to reject Boeing’s latest four-year labor contract proposal. The union members, who work at Boeing facilities in St. Louis, St. Charles, Missouri, and Mascoutah, Illinois, made their decision during a vote held on August 3, 2025. This marks the second rejection by the union in just over a week; an earlier offer was also turned down on July 27.
As a result of Sunday’s vote, workers will begin a strike at midnight on August 4.
“IAM District 837 members have spoken loud and clear, they deserve a contract that reflects their skill, dedication, and the critical role they play in our nation’s defense,” said IAM District 837 Directing Business Representative Tom Boelling. “We stand shoulder to shoulder with these working families as they fight for fairness and respect on the job.”
“Our union is built on democracy, and our members have every right to demand a contract worthy of their contributions,” said IAM International President Brian Bryant. “We will be there on the picket lines, ensuring Boeing hears the collective power of working people.”
“IAM District 837 members build the aircraft and defense systems that keep our country safe,” said IAM Midwest Territory General Vice President Sam Cicinelli. “They deserve nothing less than a contract that keeps their families secure and recognizes their unmatched expertise.”
“Solidarity is our strength. This vote shows that when workers stand together, they can push back against corporate greed and fight for a better future for themselves and their families,” said IAM Resident General Vice President Jody Bennett. “We are proud to back our members every step of the way.”
IAM members at these locations are responsible for assembling and maintaining advanced military aircraft such as the F-15 and F/A-18 fighter jets as well as other missile and defense technologies crucial to U.S. national security efforts.
The International Association of Machinists and Aerospace Workers represents about 600,000 active and retired workers across several industries in North America including aerospace, defense manufacturing, airlines, railroads, transit systems, healthcare sectors, automotive fields among others in both the United States and Canada.
More information about IAM can be found at https://www.goiam.org/.
