1. Institute for Work and Health; Toronto Ontario Canada
2. Department of Economics; McMaster University; Hamilton Ontario Canada
3. Dalla Lana School of Public Health; University of Toronto; Toronto Ontario Canada
4. Safety and Health Assessment and Research Prevention Program; Washington State Department of Labor and Industries; Tumwater Washington
5. School of Population and Public Health; Faculty of Medicine; University of British Columbia; Vancouver British Columbia Canada
6. School of Public Health and Health Systems; University of Waterloo; Waterloo Ontario Canada