https://www.ueunion.org/org_steps.html
After the UAW strikes they fought for and negotiated a 25% wage increase over four and a half years, reinstated cost-of-living adjustments, and the elimination of the two-tier wage system. Additionally, the contracts improved retirement benefits and provided stronger protections against plant closures, marking significant gains for the workers involved.
https://wikipedia.org/wiki/2023_United_Auto_Workers_strike
They also coordinated contract expirations for May 1st 2028, and the more labor unions who coordinated those dates the more collective bargaining can effect even with anti labor laws like Taft-Hartley.