Office job sitting demand scale: Evidence of construct and predictive validity.

Drawing on sedentary behavior and Job Demands-Resources theory, we developed a new scale for assessing office job sitting demand, conceptualized as job demand, and validated it using two independent samples. In Study 1 (N = 252), we developed the items and tested the Office Job Sitting Demand scales' factor structure through exploratory factor analysis. In Study 2 (N = 248), we tested the scales' factorial validity through confirmatory factor analysis. Indicators of measurement invariance showed no differences between participants who engage in leisure-time sport and participants who do not. Moreover, we tested convergent, discriminant, and criterion validity. We found significant positive associations with exhaustion, work pressure, and musculoskeletal complaints. The construct was unrelated to proactive vitality management and relaxation. Our results illustrate the relation between this new job demand in the workplace with employee well-being. Based on our findings, this newly developed instrument is valid and reliable and can be used to assess office job sitting demand to prevent burnout and health complaints.