Professor Collie is Director of the Healthy Working Lives Research Group and the Division of Health Systems, Services and Policy in the School of Public Health and Preventive Medicine at Monash University. He is also President of the Scientific Committee on Work Disability Prevention for the International Commission on Occupational Health (ICOH), the peak global scientific body for work and health research; Chair of the Living Labs program for the Australian National Centre for Healthy Ageing; and a member of the Australian Research Council College of Experts. Alex is also an ARC Future Fellow (2020 to 2024) and a Churchill Fellow.

Professor Collie is an applied public health and social policy scholar. His research and teaching focus on work injury rehabilitation, occupational health and social protection schemes for personal injury. He leads a multidisciplinary, mixed methods research program set in Australian and international personal injury schemes such as workers’ compensation, motor vehicle crash compensation and disability insurance.

He is currently Primary Chief Investigator on the ARC funded Worker Voice project, using participatory modelling techniques to re-imagine workers' compensation scheme design in Australia. He is also a Chief Investigator on the NHMRC Centre of Research Excellence in Improving Health After Compensable Injury - developing evidence to support rehabilitation after injury in motor vehicle crash; and Primary Chief Investigator on the TRANSITIONS data linkage study - characterising the transitions of workers with long term health condition between state and commonwealth social protection systems.