Margaret M. Keith is an occupational and environmental health advocate and researcher, focussing particularly on women and work. She earned a PhD from the University of Stirling. Margaret served as Executive Director of the Windsor Occupational Health Information Service before joining the Occupational Health Clinics for Ontario Workers in Sarnia. She and her partner, Jim Brophy, assisted the First Nation’s community of Aamjiwnaang near Sarnia in exploring health problems related to environmental pollution from the adjacent petrochemical industry. Margaret was co-author of an internationally recognized research article documenting a skewed sex birth ratio uncovered after examining Aamjiwnaang birth records. She lives in Emeryville, Ontario.

James T. Brophy is a career activist, researcher, and advocate focussing on occupational and environmental health. He received his doctorate from the University of Stirling on occupational risks for breast cancer. He is a former executive director of the Occupational Health Clinics for Ontario Workers (OCHOW) in Windsor and then Sarnia, where he and his partner, Margaret Keith, helped to document one of the largest cohorts of asbestos diseased workers in Canadian history. In recent years, he collaborated on research exploring violence against health care workers and on the lived experience of inadequately protected health care staff working during the pandemic. He lives in Emeryville, Ontario.