UAW members overwhelmingly granted union leaders authorization to strike during ongoing contract negotiations with GM, Ford and Stellantis, if warranted

The "strike authorization vote" is part of the union's constitution and viewed as a procedural step in the negotiations

UAW President Shawn Fain has been far more vocal than past union leaders about its ability to use work stoppages as a weapon in its arsenal against the companies during the negotiations
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https://www.cnbc.com/2023/08/25/uaw-strike-vote-to-authorize.html