A/Prof Sim is a specialist in occupational medicine and public health
medicine, being a Fellow of the Australasian Faculties of Occupational
Medicine and Public Health Medicine of the Royal Australasian College of
Physicians, and a Fellow of the Faculty of Occupational Medicine, Royal
College of Physicians, London. He is also a member of the Thoracic
Society of Australia and New Zealand. His main research interests are in
occupational disease surveillance and prevention.