Job demands, control and support: Meta-analyzing moderator effects of gender, nationality, and occupation

Abstract

The job demands-control (-support) model (JDC(S)) remains one of the most influential to HR-related issues of work stress, organizational behavior, and job design. However, despite over 37years of research, the first meta-analysis of the model was conducted only recently. It examined interrelationships between the model's three workplace characteristics: demand, control and support in order to better understand how employees view relationships between these prominent work dimensions. A rather surprising result was the near-zero demand-control relationship, which was found to be moderated by gender. The current analysis extends our understanding of DCS interrelationships to include examination of nationality and occupation as additional moderating variables. We also build on the initial review by extending moderator analysis to relationships between demand-control-support dimensions and job satisfaction and emotional exhaustion — the two most examined psychological outcomes in primary studies. The present meta-analysis narrows the field of studies to 141 studies (N(Individuals)=145,424) of Karasek's model which include these outcomes. Our findings show additional patterns of gender moderation, including moderation of the demands-job satisfaction relationship. Additionally, both nationality and occupation moderate every DCS interrelationship, and relationship with job satisfaction and emotional exhaustion in some way. Our results offer new understanding as to the boundaries of these relationships, and the JDC(S) model; and invite further theory building and meta-analytic investigation.