Occupational health psychology

Occupational health psychology (OHP) is an interdisciplinary area of psychology that is concerned with the health and safety of workers. OHP addresses a number of major topic areas including the impact of occupational stressors on physical and mental health, the impact of involuntary unemployment on physical and mental health, work-family balance, workplace violence and other forms of mistreatment, psychosocial workplace factors that affect accident risk and safety, and interventions designed to improve and/or protect worker health. Although OHP emerged from two distinct disciplines within applied psychology, namely, health psychology and industrial and organizational psychology, for a long time the psychology establishment, including leaders of industrial/organizational psychology, rarely dealt with occupational stress and employee health, creating a need for the emergence of OHP. OHP has also been informed by other disciplines, including occupational medicine, sociology, industrial engineering, and economics, as well as preventive medicine and public health. OHP is thus concerned with the relationship of psychosocial workplace factors to the development, maintenance, and promotion of workers' health and that of their families. The World Health Organization and the International Labour Organization estimate that exposure to long working hours causes an estimated 745,000 workers to die from ischemic heart disease and stroke in 2016, mediated by occupational stress. The Industrial Revolution prompted thinkers, such as Karl Marx with his theory of alienation, to concern themselves with the nature of work and its impact on workers. Taylor's (1911) Principles of Scientific Management as well as Mayo's research in the late 1920s and early 1930s on workers at the Hawthorne Western Electric plant helped to inject the impact of work on workers into the subject matter psychology addresses. About the time Taylorism arose, Hartness reconsidered worker-machine interaction and its impact on worker psychology.