Occupational Epidemiology is one of the oldest and most salient areas in Epidemiology. People need to work, so understanding the aspects of the work environment that contribute to health is vital to public health. Exposures are often not confined to the workplace, meaning knowledge generated has wider importance. For example, occupational cohort studies of the health effects of asbestos and diesel exhaust have led to determinations of carcinogenicity by the International Agency for Research on Cancer. The knowledge generated about asbestos ultimately lead to banning its use broadly.In this episode, we discuss the field’s history and where it stands with Dr. Ellen Eisen, professor at UC Berkeley, who has spent her career advancing our understanding of the impacts of workplace exposures.