Updated August 4, 2025 at 1:03 AM MDT

Thousands of unionized workers at Boeing facilities in Missouri and Illinois went on strike early Monday after failing to reach an agreement on a labor contract.

Roughly 3,200 workers at sites in St. Louis, St. Charles, Mo., and Mascoutah, Ill., began striking at midnight local time. In a post on X , the International Association of Machinists and Aerospace Workers District 837 (IAM), the union representing the workers, said the strike began because, "... this is about respect and dignity, not empty promises."

The action comes days after the International Association of Machinists and Aerospace Workers District 837 (IAM), whose members build fighter jets and other weapons systems, rejected a modified contract offered by Boeing.

"IAM District 83

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