Factbox-From Detroit Three to healthcare, US labor unions flex muscle By Reuters – Canada Boosts
© Reuters. FILE PHOTO: Teamster member Sergio Martinez yells out throughout a rally outdoors a UPS facility in downtown in Los Angeles, California, U.S. July 19, 2023. REUTERS/Mike Blake By Mrinalika Roy (Reuters) -A good U.S. labor market, the expiry of union contracts and excessive dwelling prices have led to powerful negotiations for pay hikes…