OHE is a multidisciplinary firm that specializes in providing high quality services in the field of environmental and health and safety consulting. We are a Canadian company with our head office located in Mississauga, Ontario and a network of associate companies strategically located in major centers across Canada.

Our mission is to provide professional, cost-effective, and timely environmental and occupational hygiene consulting services and solutions to our clients with a high level of attention to quality and the value of our products and services.