Aggregate Industries-Northeast Region, Inc. v. Teamsters Local Union No. 42

# Summary of Aggregate Industries-Northeast Region, Inc. v. Teamsters Local Union No. 42 **What Happened** Aggregate Industries unilaterally reassigned work that normally belonged to union members covered by a collective bargaining agreement to workers outside the union. The union filed a grievance (a formal complaint under their contract), and the case went to arbitration, an alternative dispute process. When Aggregate Industries challenged the arbitration decision in court, the union argued the court should uphold it. **What the Court Decided** The court sided with the union. It confirmed that the arbitration award was valid and that Aggregate Industries violated the contract by reassigning union work without permission. However, the court did not award attorney's fees or costs to the union. **Why This Matters for Workers** This ruling protects union members' right to collectively bargained work. It shows courts will enforce contracts that prevent employers from shifting union jobs to non-union workers. When workers have a union contract, the employer cannot unilaterally change working conditions or reassign their duties without following the agreed-upon process.