Description

The Job Demands and Decision Latitude Scale (JDDLS-15) is a standardized psychometric instrument designed to assess the balance between employees’ job demands and their degree of decision-making autonomy within the workplace. The questionnaire is based on Karasek’s Job Demand–Control Model, one of the most influential theoretical frameworks in occupational health psychology, which proposes that employee well-being, work performance, and occupational stress are determined by the interaction between job demands and the level of control employees possess over their work.

The instrument evaluates two fundamental dimensions of the work environment. Job Demands refer to the psychological pressures associated with work, including workload, time pressure, task complexity, work intensity, and cognitive demands. Decision Latitude, also referred to as job control, reflects employees’ autonomy in determining how their work is organized, the degree of discretion they have in making work-related decisions, and their opportunity to utilize and develop professional skills while performing their duties.

According to the Job Demand–Control Model, employees experience the greatest occupational strain when high job demands are combined with limited decision-making autonomy. Conversely, high levels of autonomy may buffer the negative effects of demanding work by increasing employees’ sense of control, motivation, competence, and psychological resilience. The interaction between these two dimensions has consistently been associated with job satisfaction, occupational stress, burnout, work engagement, cardiovascular health, absenteeism, and organizational performance.

The Job Demands and Decision Latitude Scale (JDDLS-15) is extensively used in occupational health psychology, industrial and organizational psychology, public health, human resource management, occupational medicine, ergonomics, organizational behavior, healthcare research, business administration, and workplace well-being studies, where it serves as a key instrument for evaluating psychosocial working conditions.

Data Analysis and Use

Data obtained from the Job Demands and Decision Latitude Scale (JDDLS-15) are analyzed using comprehensive psychometric and statistical procedures designed to evaluate employees’ perceptions of workplace demands and decision-making autonomy. Participants respond to questionnaire items using a Likert-type response scale, allowing separate quantitative scores to be calculated for Job Demands and Decision Latitude, while the interaction between these dimensions can also be examined to estimate levels of occupational strain.

Psychometric evaluation typically includes analyses of internal consistency using Cronbach’s alpha coefficient, together with assessments of test–retest reliability, construct validity, content validity, criterion validity, convergent validity, discriminant validity, and exploratory and confirmatory factor analyses (EFA/CFA) to verify the theoretical structure of the instrument. Additional analyses frequently include composite reliability, measurement invariance across occupational groups, and item-response analyses to ensure stable psychometric performance across different organizational settings.

Statistical analyses commonly involve descriptive statistics, calculation of means and standard deviations, Pearson or Spearman correlation analyses, multiple regression models, hierarchical regression, structural equation modeling (SEM), multilevel modeling, mediation and moderation analyses, cluster analysis, and comparative procedures such as independent-samples t-tests and analysis of variance (ANOVA). These methods enable researchers to investigate relationships between job demands, decision latitude, occupational stress, burnout, job satisfaction, work engagement, organizational commitment, employee performance, absenteeism, cardiovascular health, and psychological well-being.

The findings are valuable for organizational psychologists, occupational physicians, human resource professionals, managers, researchers, and policymakers seeking to identify psychosocial workplace risks, improve organizational design, reduce occupational stress, enhance employee well-being, and develop evidence-based workplace interventions.

Objective

The primary objective of the Job Demands and Decision Latitude Scale (JDDLS-15) is to provide a reliable and valid assessment of the interaction between job demands and employees’ decision-making autonomy within the workplace. The questionnaire enables researchers, occupational psychologists, managers, human resource professionals, and healthcare specialists to evaluate how psychosocial work conditions influence employee well-being, occupational stress, motivation, productivity, and organizational performance.

The instrument supports both scientific research and organizational practice by facilitating the identification of high-strain work environments, evaluating psychosocial occupational risks, monitoring workplace interventions, and designing evidence-based strategies aimed at improving work organization, employee autonomy, occupational health, and long-term organizational effectiveness.

Scoring

The Job Demands and Decision Latitude Scale (JDDLS-15) consists of 15 self-report items, with participants responding to each statement using a Likert-type response scale, typically ranging from 1 (“Strongly Disagree”) to 5 (“Strongly Agree”). Individual responses are summed or averaged to calculate separate scores for the two principal dimensions: Job Demands and Decision Latitude. The relationship between these two scores provides an indication of employees’ psychosocial working conditions and the balance between workplace demands and personal control.

Higher Job Demands scores indicate greater workload, stronger psychological pressure, increased task complexity, and higher occupational demands. Higher Decision Latitude scores indicate greater autonomy, increased decision-making authority, stronger opportunities for skill utilization, and greater control over work activities. Employees reporting high job demands combined with low decision latitude are generally considered more likely to experience occupational strain and work-related stress, whereas higher autonomy may mitigate the adverse effects of demanding work environments.

Interpretation of questionnaire scores should always be supported by comprehensive psychometric evaluation, including analyses of Cronbach’s alpha coefficients, construct validity, criterion validity, exploratory and confirmatory factor analyses, measurement invariance, normative comparisons, and cross-cultural validation, ensuring accurate and reliable assessment across diverse occupational and organizational populations.

References

Karasek, R. A. (1979). Job Demands, Job Decision Latitude, and Mental Strain: Implications for Job Redesign. Administrative Science Quarterly, 24(2), 285–308.

Karasek, R. A., & Theorell, T. (1990). Healthy Work: Stress, Productivity, and the Reconstruction of Working Life. Basic Books.

Johnson, J. V., & Hall, E. M. (1988). Job Strain, Workplace Social Support, and Cardiovascular Disease: A Cross-sectional Study of a Random Sample of the Swedish Working Population. American Journal of Public Health, 78(10), 1336–1342.

de Lange, A. H., Taris, T. W., Kompier, M. A. J., Houtman, I. L. D., & Bongers, P. M. (2003). The Relationships Between Work Strain, Personal Strain, and Work Outcomes: A Review of Longitudinal Studies. Occupational and Environmental Medicine, 60(1), 55–64.

Van Der Doef, M., & Maes, S. (1999). The Job Demand–Control (Support) Model: A Review of Theoretical and Empirical Issues. Work & Stress, 13(2), 83–105.