[*]I owe special thanks to Tricia Gladden, Jeff Groen, Anne Polivka, and Kathryn Shaw for helpful comments.I would also like to thank seminar participants at the 2006 SoLE meetings; Florida State University; The University of North Carolina, Chapel Hill; Clemson University; The University of Texas, Arlington; and The University of Louisville.All mistakes are my own.

Address:Economics Department, College of Business, University of Louisville, Louisville, KY, 40292

Phone:(502) 852-2342.�� Email: [email protected]

[�] This is a preprint of an Article accepted for publication in Industrial Relations � 2003, the Regents of the University of California.