Research suggests that unionized firms are generally less profitable than nonunionized firms, unions reduce employment growth, and unionized workers are generally less satisfied than nonunion workers. Together, these facts provide strong evidence that unions are bad for workers.

The statement oversimplifies the impact of unions on workers and firms. While some research suggests unions may have negative effects on firm profitability and employment growth, unions also negotiate for higher wages, better working conditions, and job security for their members. Worker satisfaction is complex and can be influenced by many factors, including but not limited to union membership. The overall effect of unions on workers cannot be deemed entirely negative without considering these broader aspects.