Leslie Hammer, PhD, is the Associate Director for Applied Research in the Oregon Institute of Occupational Health Sciences and Director of the Oregon Healthy Workforce Center, Total Worker Health® center of excellence, at Oregon Health & Science University. She is also a Professor Emerita at Portland State University and a leading international expert on workplace mental health, work and family, and occupational stress. She specializes in the mental and physical health effects of supportive supervision at work and has extensive experience in designing, implementing, and evaluating worksite interventions and evidence-based supervisor training, including the Family Supportive Supervisor Behavior (FSSB) training and the Mental Health Supportive Supervisor Behavior (MHSSB) training. Her work with marginalized communities has focused on farmworkers and she is currently evaluating the effects of recent overtime legislation on farmworkers and their families. This legislation removes exemptions for overtime being implemented in the state of Oregon and is being phased-in from January 2023 to January 2028.

She is a Fellow of the American Psychological Association, the Society for Industrial and Organizational Psychology, and the European Academy of Occupational Health Psychology. She is also the Founding President of the Society for Occupational Health Psychology. She co-wrote a book entitled Working Couples Caring for Children and Aging Parents (2008), and publishes widely in such outlets as the Journal of Applied Psychology, Journal of Occupational Health Psychology, and Journal of Environmental and Occupational Medicine.