Striking hotel workers walk the picket line in Los Angeles, California, on July 2, 2023. Ringo Chiu/AFP via Getty Images hide caption

UAW members hold picket signs near a General Motors Assembly Plant in Delta Township, Mich., on Sept. 29, 2023. The UAW is gradually tightening the screws on the Big Three automakers as it pursues new contracts. Paul Sancya/AP hide caption

UAW workers picket outside of the Stellantis Mopar parts facility in Naperville, Ill., on Sept. 22, 2023. The union is expanding its strike against GM and Stellantis citing the lack of progress in talks for a new contract. Scott Olson/Getty Images hide caption

The UAW's hard bargain in ongoing negotiations with the Big Three automakers is being driven by concessions the union made in 2007. Auto workers have felt the impact of those concessions to this day. Sarah Rice/Getty Images hide caption

In this Wednesday, May 8, 2013 photo, Jeff Caldwell, 29, a chassis assembly line supervisor, monitors the assembly line at the Chrysler Jefferson North Assembly plant in Detroit. Paul Sancya/AP hide caption

UAW President Shawn Fain makes an appearance with striking workers at the Ford Assembly Plant in Wayne, Mich. on Sept. 15, 2023. The UAW started a strike at three plants of the Big Three in the Midwest. It's the first time the union is striking against the top three Detroit automakers at once. Matthew Hatcher/AFP via Getty Images hide caption

A United Auto Workers member walks in the Labor Day parade in Detroit on Sept. 4, 2023. The UAW is on the verge of a historic strike unless it can clinch a deal with the Big Three automakers by a deadline on midnight. Paul Sancya/AP hide caption

United Auto Workers President Shawn Fain talks with members at a Labor Day parade in Detroit, on Sept. 4, 2023. Fain plans to undertake strategic strikes at Big 3 automaker plants if talks fail on a new contract. Paul Sancya/AP hide caption