I have 40 years of experience and specialize in the field of occupational health with specific knowledge in the areas of economic analysis, history and public policy. I have published on such topics as cost-effectiveness of interventions, political economy of occupational health, and international environmental and occupational health policy. I have testified 6 times on topics such as company policy with respect to injury reporting, indoor air quality policy and occupational lung disease. I have worked as a consultant to several unions.