Professor Ichniowski analyzes the impact of human resource management on the economic performance of firms. In several research projects funded by the National Science Foundation, the Alfred P. Sloan Foundation, the U.S. Department of Labor and the Citibank Behavioral Research Council, he investigates the development of high-performance work systems, employee participation and involvement in continuous improvement activities, international differences in work organization and the determinants of worker activities on the job. Ichniowski has also written extensively on the emergence of unionization in the public sector and its effects on economic outcomes of government jurisdictions. He teaches the elective Managerial Negotiations.