Noted: Hamersma and Carolyn Heinrich, a University of Wisconsin public affairs professor, studied occupational records, wages and earnings for 5,877 Wisconsin workers between 1995 and 2004.
Office of Strategic Communication
Noted: Hamersma and Carolyn Heinrich, a University of Wisconsin public affairs professor, studied occupational records, wages and earnings for 5,877 Wisconsin workers between 1995 and 2004.