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Job Demands, Job Decision Latitude, and Mental Strain: Implications for Job Redesign

Why this mattered

Karasek’s 1979 paper mattered because it changed occupational stress from a largely one-dimensional problem of “too much work” into an interactional theory of work design. Its central claim was that mental strain is most associated with the combination of high job demands and low decision latitude, while demanding jobs with high latitude may instead be “active” jobs that support learning and efficacy. That reframed control, skill use, and participation in decisions as structural features of jobs, not merely individual coping traits or morale variables (Karasek 1979).

The paradigm shift was practical as well as theoretical: if strain depended on the balance between demands and latitude, then organizations could reduce harm without simply lowering output demands. Job redesign became a health intervention. The paper also helped explain why earlier studies produced contradictory findings: studies that mixed demands and discretion, or modeled them as separate linear effects, could miss the high-demand/low-control configuration that Karasek identified as “job strain.”

Afterward, the demand-control model became a foundation for occupational health psychology and work-design research. Later work extended it into the demand-control-support model by adding social support, and broader frameworks such as the Job Demands-Resources model generalized Karasek’s insight: job demands are not uniformly damaging, but their effects depend on the resources, autonomy, and social conditions available to meet them (Bakker & Demerouti 2007). Its influence lies in making psychosocial job structure measurable, testable, and redesignable.

Abstract

(no abstract available)

  • cite → The social readjustment rating scale — Karasek's job-strain model cites the Social Readjustment Rating Scale as a prior method for quantifying psychosocial stress exposure.
  • enables ← The social readjustment rating scale — The Social Readjustment Rating Scale quantified stressors, enabling Karasek's job-strain model to connect workplace demands and control to mental strain.

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