Malcolm Sim is an Occupational and Environmental Physician who established and led the Monash Centre for Occupational and Environmental Health (MonCOEH) in the School of Public Health & Preventive Medicine.  His main research interests include the risk of chronic diseases, such as cancer and respiratory diseases from chemical and other exposures in the workplace and community, surveillance of occupational diseases such as mesothelioma and silicosis and the health of military personnel and veterans. He has led several longitudinal cohort studies of workers in high-risk industries, such as firefighters, the aluminium industry, the petroleum industry and coal mining.  He has been a Chief Investigator on many NHMRC, ARC and MRFF funded studies.  He was a Chief Investigator on the 10 year Hazelwood Mine Fire Study studying health effects in the local community following the mine fire in 2014 and co-established the Victorian silicosis research program.  Malcolm also led the review in 2016 of the health assessment scheme for coal mine workers following the re-emergence of Black Lung among those workers in Queensland.

Malcolm was the Editor-in-Chief for seven years of Occupational and Environmental Medicine, a specialty journal of the BMJ, a member of the Editorial Board of the Cochrane Work Review Group and a member of the Synthesis and Translation of Research Evidence Advisory Group of the NHMRC.  He was an elected Board member of the International Commission on Occupational Health (ICOH) for six years and Chair of the ICOH Scientific Committee on Occupational Medicine.  He has been a member of Monograph working groups for the International Agency for Research on Cancer.  He has been a member of several international research and professional collaborations, such as MODERNET and OMEGA-NET and has been an invited speaker at many international conferences. 

Malcolm also has strong interests in education and training and was the course convenor for the Master of Occupational and Environmental Health at Monash University.  Malcolm was elected to the Collegium Ramazzini, based in Italy, in 2018 and awarded Honorary Membership of the Irish Faculty of Occupational Medicine in 2019.  He has received several awards, including a College Medal for Outstanding Service by the Royal Australasian College of Physicians and the Dean's Award at Monash for Excellence in External Engagement.  In 2019 Malcolm was made a Member of the Order of Australia (AM) for significant service to occupational and environmental medicine.

After retiring from Monash University in 2021 after 32 years, Malcolm was made a Professor Emeritus.  Since then, he has remained very active, as follows:

• Named by The Australian as the national leading researcher in Environmental and Occupational Medicine in its 2026 published list of 250 research fields.
• Continued to publish scientific papers with a current total of more than 350 outputs and an H-Index over 50.
• Completed my two year elected appointment as President of the Australasian Faculty of Occupational and Environmental Medicine in the Royal Australasian College of Physicians, was a member of the AFOEM Policy and Advocacy Committee and Chair of the College Fellowship Committee.
• A member of many COVID-19 Advisory Committee at state and federal level during the Pandemic, including the Infection Control Expert Group (ICEG), the Australian Commission on Safety and Quality in Health Care National Clinical Taskforce to review the National Safety and Quality Health Service Standard – Preventing and Controlling Healthcare-Associated Infection, the Victorian Healthcare Infection Prevention and Wellbeing Taskforce, the National COVID-19 Clinical Evidence Taskforce, the Victorian Ventilation Technical Advisory Group and represented the Victorian Dept of Health on the Building and Construction Industry COVID taskforce.
• Played a prominent role in providing research evidence and advice to inform the decision by Government Work Health and Safety Ministers to ban artificial stone in 2024. This included being co-lead of the Victorian Registry on silica-associated diseases and author on many published papers from that registry, member of the Commonwealth Dept of Health Advisory Group to develop the National Occupational Respiratory Disease Registry, member of the Australian Lung Foundation advisory committees to develop the Silicosis National Action Plan and the Early Detection and Response Protocol for Occupational Respiratory Disease Risk, member of the Silicosis Expert Group in the RACP, member of the silica advisory committee for the Asbestos and Silica Safety and Eradication Agency and member of the Silica reference group for WorkSafe Victoria.
• Appointed a member of the Dust Diseases Board in NSW in 2024.
• Invited member of the International Agency for Research on Cancer (IARC) Monograph working group to review the carcinogenicity of talc and acrylonitrile and Co-chair of the human studies subgroup, held in Lyon, France, June 2024.
• In 2025 invited to be Member of an Expert Working Group to advise the US Food and Drug Administration on talc toxicity and measures to reduce community exposure.
• Member, scientific advisory board for the GOLIAT research program on radiofrequency radiation based in Barcelona Spain,
• Co-President of the triennial Congress of the International Commission on Occupational Health hosted by Australia held online in 2022 due to the Pandemic.
• Completed my tenure as Chair, Advisory Committee for the Veteran Health Research Program of the Australian Institute for Health and Welfare.
• Member of the Brain Injury Expert Advisory Panel established by Defence and DVA in 2025 to respond to recommendations of the Royal Commission into Defence and Veteran Suicide.
• Awarded Honorary Fellowship of the Hong Kong College of Community Medicine in 2023 and appointed a member of the examination Panel for the College’s subspeciality in occupational and environmental medicine.
• Continued as a Presiding Member of the Medical Panels in Victoria, including mentoring new Presiding Members.