Our Instructors

Whichever certificate program you choose, you’ll be taking courses with instructors who combine real-world knowledge with in-depth research. Our instructors are a varied lot:

  • working for municipal and provincial governments
  • experienced in major economic sectors such as agriculture, health services, engineering, and petro-chemicals
  • serving as independent health, safety, and disability consultants
  • enjoying full-time academic careers in the occupational health and safety field


The following short biographies will introduce you to our first-rate instructors. They’ll also give you a wider sense of the many career paths open to people with occupational health and safety expertise.

Dr. Mohammad Abdoli has been teaching in the area of occupational health and safety since 1992. The main areas of his teaching are ergonomics and biomechanics; safety control methods (industrial ventilation); physical agents (noise and vibration, illumination, heat and cold stress); and sectoral applications (occupational health and safety in industrial and construction sectors). His research focus is ergonomics and occupational biomechanics. Dr. Abdoli owns three different international patents for devices that he has innovated. His applied research projects in various industries have enabled him to establish the ability to quantify human body kinematics and muscle activities in both simulated laboratory and field work conditions in the Occupational Biomechanics and Ergonomics Lab at the School of Occupational and Public Health at Ryerson University.

Busuyi Aroso, BSc, MSHE, LLB, LLM, CRSP, CHRP, has over 14 years of experience in occupational health and safety. He is currently a regional safety manager for Canada Post with responsibility for most of the GTA. Busuyi has worked for provincially and federally regulated companies as well as internationally with extensive experience in different areas of OHS. In addition to a Master of Safety, Health and Environment degree and a post-graduate Certificate in Human Resources, Busuyi holds LLB and LLM degrees. He is a member of the Ontario Bar Association and volunteers as a director for a not-for-profit organization.

Dwight Barratt, BA, MSc, CAE, is a consultant with Dwight Barratt Consulting Inc., serving clients primarily in the GTA. He was the founding president and CEO of the Education Safety Association of Ontario, and also served as the director of occupational health and safety at the University of Western Ontario for almost 20 years. Dwight has taught at Ryerson since 2008 in both The Chang School and the School of Occupational and Public Health, delivering seven different courses, in the classroom as well as online.

Leora Bereskin, MPH, CRSP, is a health and safety professional with work experience in the construction, oil and gas, and manufacturing sectors. Her educational background includes a BSc in Biology from the University of Waterloo, a certificate in Occupational Health and Safety from Ryerson University, and an MPH in Occupational and Environmental Health from the University of Toronto. 

Michael Chappell CET, CRSP has worked for more than 30 years in the field of safety and civil engineering with the Ontario Ministry of Labour, and has taught at Ryerson University since 1998. As Provincial Coordinator for Occupational Health and Safety, CHSP for MOL, he develops and is responsible for strategic planning and enforcement strategies in Ontario. Michael also oversees the training of new OHSA inspectors, and is an expert in prosecution and investigative process. In his career he has also served as the chief investigator of many workplace fatalities and critical injuries for the ministry, and has testified as a witness for the Crown in more than 50 prosecutions, inquests, and private legal actions. In addition to chairing the Provincial Program Committee, Michael is responsible for the Safe at Work Ontario strategy and Coroner’s Jury responses. As the lead for operations on the Construction Health and Safety Action Plan, Michael is well placed to influence change and to push forward regulatory change in a modern regulatory environment.

Patrick DeAngelis holds a degree in chemical engineering from the University of Toronto and is registered with the Professional Engineers of Ontario (PEO). He held the position of occupational hygiene specialist with Workplace Safety and Prevention Services for over 10 years. In that role, he assisted firms in determining compliance with regulatory requirements and industry standards, and in developing and implementing appropriate control strategies. He also assisted on environmental matters including preparing the application and supporting information required to obtain Ministry of the Environment approval for the discharge of air emissions. Pat provided professional consulting services to help firms achieve safe, healthy, and productive workplaces, and he delivers public and customized training to provide health, safety, and environmental education and awareness. Pat held numerous positions with the Ontario Ministry of the Environment over a period of 24 years, where he gained engineering experience in a wide variety of industrial processes and environment-related areas.

James Ebidia has been a health and safety professional for 25 years. His career has been dedicated to specializing in occupational health, safety management systems consulting, auditing, and training. Practising as a Canadian registered safety professional (CRSP) both in the private and public sectors, James has developed, implemented, and maintained health and safety management systems for a variety of organizations. James is also a registered nurse (RN), and has developed and implemented disability management programs that included compensation claim and case management. For the last 14 years, James has worked in a consulting role to assist organizations with the development and implementation of their health and safety management systems and disability management programs. During his time as a consultant he has also obtained his Accredited Systems Auditor (ASA) certification and carries out health and safety management system and legislative compliance auditing.

Craig Fairclough, MSc(A), CRSP, CHRP, CIH, ROH, is a health and safety consultant with the Workplace Safety Prevention Services (WSPS), serving client firms in the GTA. Prior to joining the WSPS, Craig was a health, safety, and compliance supervisor for United Parcel Services. Before working in the private sector, he was a health and safety officer with the municipal government for three and a half years. Craig’s educational background includes a Bachelor of Science from Ryerson in Environmental Health, majoring in Occupational Health and Safety with a minor degree in Public Administration. Craig also holds a Master’s in Occupational Health from McGill University and a certificate in human resource management from Humber College.

Kevin W. Fortune is a safety professional who has worked in the OHS field for over 16 years. During this time, Mr. Fortune has gained a wealth of domestic and international experience working for several multinational organizations including Pillsbury, General Mills, Teva Pharmaceutical Industries, and Research in Motion. Mr. Fortune currently works for Coffey Geotechnics Inc. as a health, safety, security & environmental advisor and sits as a member of the senior management team. He holds a Bachelor of Applied Science from Ryerson University, an MBA from Niagara University, and is a Canadian registered safety professional (CRSP). He has earned his Environmental Professional (EP) designation from the Canadian Environmental Certification Approval Board.

Alkarim Kanji is the corporate safety services manager for the Liquor Control Board of Ontario (LCBO). Alkarim’s educational background includes a Bachelor of Science in Environmental Health with a focus in Occupational Health and Safety from Ryerson University. Over the last decade, Alkarim has worked in safety in both the private and public sectors with a focus on the retail environment.

Sonia Lal, MSc, CRSP, RPIH, is a clinical occupational hygienist/health and safety specialist with the Occupational Health Clinics for Ontario Workers (OHCOW) in Toronto. Sonia has been an instructor for The Chang School since 2007. She is a McGill University graduate from the Faculty of Medicine, with a master’s degree in Occupational Health. She holds a Certified Registered Safety Professional (CRSP) designation and is also a registered professional industrial hygienist (RPIH).

Michael G. Lee, PEng, is a Principal in Manadon Engineering Ontario and a partner in and the Chief Engineer of Flypass Aircraft Company Ltd. In his 35 years of practice as an engineer, Michael has provided safety engineering and safety management services for many different industries and the military in Canada, the United States, and the European Union. Michael has taught at Ryerson University for 10 years and is currently an Adjunct Professor with the School of Occupational and Public Health.

Thomas Lee, BSc, MEng, CIH, ROH, has over 35 years of professional experience in occupational health and hygiene through his employment with the Ontario Ministry of Labour (MOL). He has held positions at the MOL Occupational Health Laboratory, as occupational hygiene consultant, and from 2008 to 2012, he served as the provincial hygienist. Thomas has extensive working knowledge in occupational health and hygiene, covering a broad range of work sectors as well as areas of policy and regulatory development/implementation. Thomas holds a Master of Engineering degree from the University of Toronto in occupational health engineering and industrial hygiene. He is a Certified Industrial Hygienist (CIH) and a Registered Occupational Hygienist (ROH). Ryerson has been fortunate to have Thomas on board as a teaching colleague since 1985.

Kim MacLaughlin is a health and safety professional with experience working in the energy sector, municipal services, health care, medical research, and the construction sector. She has worked as an OHS consultant with the Industrial Accident Prevention Association, and as a provincial offences officer with the Ministry of Labour in the construction health and safety program. She is a certified registered safety professional (CRSP) with the Board of Canadian Registered Safety Professionals (BCRSP). Her education includes a background in microbiology and a degree in Occupational Health and Safety from Ryerson University. She is currently completing graduate studies in education, with a focus on distance education, at Athabasca University.

Marcia Maguire has taught in the School of Occupational and Public Health for 15 years. She has a Master of Science degree in Pharmacology from the University of Toronto.

David A.G. Meston, PEng, is president of H&S Consultants Inc. Since 1987, H&S has provided a broad range of occupational safety services with a particular focus on engineering risk reduction and safety management systems with a philosophy of “Safety by Design.” Recent clients include Enbridge Gas Distribution, Irving Oil, Heritage Gas, Energy Fundamentals Group, and Northland Power. Prior to H&S, he was a design engineer, safety consultant, and senior manager with Ontario Hydro. Dave has over 35 years of experience in engineering and management. He has participated in or led numerous risk assessments and safety audits, developed comprehensive risk-based safety management systems, and facilitated many safety training sessions and workshops. Since 1996, he has been a part-time professor at Ryerson University, teaching a variety of business courses.

Irina Rivilis, PhD, has over 10 years of experience as a researcher in the occupational health field. She has a PhD in Population Health from Brock University, a BSc in Kinesiology and Health Sciences from York University, and a Master of Epidemiology from the University of Toronto, where she focused on the primary prevention of musculoskeletal disorders and disability management. She worked at the Institute for Work & Health in Toronto for seven years as a research assistant and then as a research coordinator, where she participated in numerous projects investigating interventions to improve the health of workers and reduce the burden of occupational diseases. Since 2011, she has worked as a scientist for the Workplace Safety and Insurance Board of Ontario. In this role, she is responsible for conducting research into various occupational exposures and diseases, and providing scientific advice that informs decision-making and policy-making for various stakeholders.

Robert Stoyanoff, CIH, CChem, works in Toronto for Resource Environmental Associates as the firm's Senior Consultant and Practice Group Leader for Industrial Hygiene Services. Over the past 20 years, he has been employed in professional occupational health and safety practice, predominantly in the identification, assessment, and control of airborne chemical and physical agents. Robert’s career has included management positions with various consultancies and he has served as the Associate Director for the Centre for Occupational Health and Safety at the University of Waterloo. His research and publication activities focus on the development of test atmosphere generation systems, assessment techniques for airborne chemical contaminants, and the toxicological risk associated with alternative fuel sources for commercial vehicles.

Peter Strahlendorf, CRSP, BSc, BES, LLB, LLM, SJD, is an Associate Professor in Ryerson’s School of Occupational and Public Health. He also maintains a consulting practice in occupational and environmental health and safety, and has served as Vice-Chairperson on the Board of Governors of the Board for Canadian Registered Safety Professionals (CRSP). In addition to his teaching at Ryerson, Peter has delivered the CRSP preparatory course dozens of times across Canada.

Illia Tchernikov, MSc, PMP, is a project management professional with a Master of Science degree in Neuroscience. In his current role as a program lead at Workplace Safety & Prevention Services he manages an exceptionally diverse project portfolio focused on business strategy, stakeholder engagement, corporate safety culture, information management, evidence-based modeling, and research integration into practice. He also has a keen interest in OHS case law and the associated provincial and federal legislation. His past experience includes leading several high profile initiatives to deliver clinical health services to a vulnerable population group.  He has several publications in peer-reviewed journals and is frequently featured in project-related articles.