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U.S. Plants to Feel Impact of CAW Strike: Second-shift workers at Detroit-based General Motors Corp.’s Cadillac assembly plant will not report to work today because of the Canadian Auto Workers strike and thousands more U.S. assembly employees may be laid off this week, GM said. The Cadillac plant will operate with only one shift today and Tuesday, when it is expected to halt production completely unless the strike is resolved, GM spokesman Thomas Klipstine said. The plant employs more than 3,000 hourly workers represented by the United Auto Workers union, but Klipstine said he did not know the exact number of workers on each shift.