... 35-70. Unionization and Economic Performance: Evidence on Productivity, Profits, Investment, and Growth Barry T. Hirsch Department of Economics Florida State University ... " ;Unionization and Firm Performance: The Impact on Profits, Growth, and Productivity." American Economic Review 74 (December): 893-919. Connolly, Robert A., Barry T. Hirsch, and Mark ... and a preference for longer contracts. D. Employment Growth The effects of unions upon growth in employment has received less attention than their effects upon productivity, profits, and...