Job Demand-control Model Research Articles

Switching to self-employment can be good for your health

Relying on theoretical insights from the Job Demand-Control model, which links occupational characteristics to health, this paper provides the first causal evidence of the physical and mental health consequences of self-employment. I utilize German longitudinal data for the period 2002–2014 and difference-in-differences estimations to study switches from unemployment to self-employment (necessity entrepreneurship) and transitions from regular- to self-employment (opportunity entrepreneurship). I find that necessity entrepreneurs experience improvements in their mental but not physical health, while opportunity entrepreneurship leads to both physical and mental health gains. Importantly, the health improvements cannot be explained by changes in income or working conditions and are not driven by personality and risk preferences or the local unemployment conditions. As such, the findings highlight an additional non-monetary benefit of self-employment and have implications for entrepreneurship theory and practice, current and would-be entrepreneurs, as well as policy-makers.

Prognostic effects of selection, optimization and compensation strategies on work ability: results from the representative lidA cohort study on work, age, and health in Germany.

Regarding the increased need for the retention of older employees in the workforce, this study investigates whether there are main and interactive longitudinal effects of selection, optimization, compensation and working conditions according to the job demand-control model on work ability in older employees. Longitudinal data of computer-assisted personal interviews with one follow-up after 3 years of 3961 participants (born in 1959 and 1965) of the representative German lidA cohort study was used. Multiple linear regressions were performed, analyzing prospective main and interactive effects of selection, optimization, compensation and working conditions during baseline on perceived work ability at follow-up. Regarding selection, optimization and compensation, only compensation had a positive, but weak effect on work ability. Working conditions were more strongly related to work ability: decision authority and skill discretion had independent positive and job demands had independent negative effects on work ability. One interaction effect was observed between loss-based selection and decision authority, such that they mutually enhanced their positive effects on work ability. Only few and weak interactions among the sub-strategies, selection, optimization and compensation, were observed. Results indicate that especially favorable working conditions in terms of high job control and low job demands, but also compensation might help older employees to maintain work ability.

Associations between Job Strain and Arterial Stiffness: A Large Survey among Enterprise Employees from Thailand.

As an intermediate endpoint to cardiovascular disease, arterial stiffness has received much attention recently. So far, the research on work stress and arterial stiffness is still sparse and inconsistent, and no investigations on work stress and cardiovascular health among the Thai working population have been reported. Therefore, we conducted an epidemiological study among 2141 Thai enterprise employees (858 men and 1283 women) who were free from any diagnosed cardiovascular disease. Work stress was measured using Karasek’s Job Demand–Control model for job strain (a combination of high demand and low control). Arterial stiffness was evaluated by a non-invasive approach using pulse-wave analysis based on a finger photoplethysmogram. Multivariable linear regression was applied to examine associations between job strain and arterial stiffness. In men, job strain was significantly associated with arterial stiffness (β = 0.078, 95% confidence interval = 0.026 to 0.130), after accounting for sociodemographic, behavioral, dietary and biomedical factors. However, the association in women was not significant. As the first study in Thailand on work stress and cardiovascular risk, we found that job strain might be an important risk factor for cardiovascular disease among Thai working men. Further studies with longitudinal design are warranted.

Working Conditions, Job Strain, and Traffic Safety among Three Groups of Public Transport Drivers

BackgroundWorking conditions and psychosocial work factors have acquired an important role explaining the well-being and performance of professional drivers, including those working in the field of public transport. This study aimed to examine the association between job strain and the operational performance of public transport drivers and to compare the expositions with psychosocial risk at work of three different types of transport workers: taxi drivers, city bus drivers, and interurban bus drivers.MethodA sample of 780 professional drivers was drawn from three transport companies in Bogota (Colombia). The participants answered the Job Content Questionnaire and a set of sociodemographic and driving performance questions, including age, professional driving experience, work schedules, and accidents and penalties suffered in the last 2 years.ResultsAnalyses showed significant associations between measures of socio-labor variables and key performance indicators such road traffic accidents and penalties. Furthermore, multiple linear regression analysis contributed to explain significantly suffered accidents from key variables of the Job Demand-Control model, essentially from job strain. In addition, throughout post-hoc analyses, significant differences were found in terms of perceived social support, job strain, and job insecurity.ConclusionWork stress is an issue that compromises the safety of professional drivers. This research provides evidence supporting a significant effect of job strain on the professional driver's performance. Moreover, the statistically significant differences between taxi drivers, city bus drivers, and interurban bus drivers in their expositions to work-related stress suggest the need for tailored occupational safety interventions on each occupational group.

Participatory work place intervention for stress prevention in primary health care. A randomized controlled trial

ABSTRACTThe aim of this study is to explore whether a participatory, organizational intervention can reduce work-related risk factors, and thereby prevent stress-related ill health. We build on the job demand-control and effort-reward imbalance models of stress. It is a two-armed randomized trial, with one primary health care unit receiving the intervention and a two-unit control group. Validated questionnaires for the assessment of psychosocial work environment and health were administered, at the baseline and at 6 and 12-month follow up. The primary outcome was job strain. Secondary outcomes were effort–reward imbalance, exhaustion, sleep, and recovery. Group-level objective data on workload and data about relevant processes during the study were continuously collected. The changes in the intervention group with regard to job strain, effort-reward imbalance, exhaustion, sleep and recovery were not statistically different from changes in the control group. For the non-exhausted employees though, reward was significantly higher at follow up compared to baseline, but only in the intervention group. An important piece of information is that the objective workload was statistically significantly higher in the intervention group throughout the study. Not all the components of the intervention were implemented as intended. Context and process information, such as objective data and implementation fidelity are necessary for a valid interpretation of the results.

The Mediating Role of Emotional Exhaustion and Job Satisfaction on the Relationship Between Job Demands and Instigated Workplace Incivility

High job demands are considered a risk factor for uncivil behavior in the workplace but the mechanism behind this relationship remains unclear. The current study aimed to analyze emotional exhaustion and job satisfaction as sequential mediators of the relationship between job demands and instigated workplace incivility within the integrative framework of affective events theory and the job demand–control model. Data were collected from 102 university academic staff in Klang Valley, Malaysia, via snowball sampling method. The results supported the predicted three-path mediation model with age, gender, and employment contract type as covariates. High job demands led to emotional exhaustion, which, in turn, led to a decrease in job satisfaction level and as a result gave rise to instigated workplace incivility. Implications, limitations of these findings, and directions for future research are further discussed on how to enhance and establish a civil and respectful workplace.

Is Job Control a Double-Edged Sword? A Cross-Lagged Panel Study on the Interplay of Quantitative Workload, Emotional Dissonance, and Job Control on Emotional Exhaustion.

Previous meta-analytic findings have provided ambiguous evidence on job control as a buffering moderator of the adverse impact of job demands on psychological well-being. To disentangle these mixed findings, we examine the moderating effect of job control on the adverse effects of quantitative workload and emotional dissonance as distinct work-related demands on emotional exhaustion over time. Drawing on the job demands-control model, the limited strength model of self-control, and the matching principle we propose that job control can facilitate coping with work-related demands but at the same time may also require employees’ self-control. Consequently, we argue that job control buffers the adverse effects of quantitative workload while it reinforces the adverse effects of emotional dissonance, which also necessitates self-control. We examine the proposed relations among employees from an energy supplying company (N = 139) in a cross-lagged panel study with a six-month time lag. Our results demonstrate a mix of causal and reciprocal effects of job characteristics on emotional exhaustion over time. Furthermore, as suggested, our data provides evidence for contrasting moderating effects of job control. That is, job control buffers the adverse effects of quantitative workload while it reinforces the adverse effects of emotional dissonance on emotional exhaustion.

Bus operators' responses to job strain: An experimental test of the job demand-control model.

The research aim was to test the Job Demand-Control (JDC) Model demands × Control interaction (or buffering) hypothesis in a simulated bus driving experiment. The buffering hypothesis was tested using a 2 (low and high demands) × 2 (low and high decision latitude) design with repeated measures on the second factor. A sample of 80 bus operators were randomly assigned to the low (n = 40) and high demands (n = 40) conditions. Demands were manipulated by increasing or reducing the number of stops to pick up passengers, and decision latitude by imposing or removing restrictions on the Rapid Transit Bus (BRT) operators' pace of work. Outcome variables include physiological markers (heart rate [HR], heart rate variability [HRV], breathing rate [BR], electromyography [EMG], and skin conductance [SC]), objective driving performance and self-report measurements of psychological wellbeing (psychological distress, interest/enjoyment [I/E], perceived competence, effort/importance [E/I], and pressure/tension [P/T]). It was found that job decision latitude moderates the effect of job demands on both physiological arousal (BR: F(1, 74) = 4.680, p = .034, SC: F(1, 75) = 6.769, p = .011, and EMG: F(1, 75) = 6.550, p = .013) and psychological well-being (P/T: F(1, 75) = 4.289, p = .042 and I/E: F(1, 74) = 4.548, p = .036). Consistently with the JDC model buffering hypothesis, the experimental findings suggest that increasing job decision latitude can moderate the negative effect of job demands on different psychophysiological outcomes. This finding is useful for designing organizational and clinical interventions in an occupational group at high risk of work stress-related disease. (PsycINFO Database Record

Workload, Work Pressure and Interpersonal Deviance in Academia: The Mediating Role of Neutralization

Extant empirical researches on deviant workplace behaviour have concentrated on negative deviant acts directed towards both the organizations (organizational) and its members (interpersonal) simultaneously while others solely focused on deviant behaviours directed at organization and its properties (organizational deviance). However, studies have not investigated interpersonal deviance as a major focus without considering organizational deviance. Drawing from theory of neutralization and job demand control model, the present study examined the mediating role of neutralization on the relationship between workload, work pressure and interpersonal deviance. The data was obtained from 356 academics in public universities in Nigeria. Using partial least square structural equation modeling, results revealed that workload and work pressure were significantly related to interpersonal deviance. On the other hand, neutralization significantly mediated the positive relationship between workload and interpersonal deviance. Similarly, neutralization mediated the relationship between work pressure and interpersonal deviance. Conclusively, it is essential to review the existing workloads and working conditions of faculty members in Nigerian public tertiary institutions with a view of minimizing interpersonal deviance.

Ten-year trajectories of stressors and resources at work: Cumulative and chronic effects on health and well-being.

Employing 5 waves of measurement over a period of 10 years, we explored the effects of exposure to constellations of conditions at work on physical and psychological strain, estimating the history of exposure over time. Specifically, we first tested if the 4 constellations postulated by the job demand-control (JDC) model, extended to include social stressors, could be identified empirically over time through a person-centered analysis. Second, we tested 2 specific effects of the history of exposure on physical and psychological strain: cumulative effects (i.e., history of exposure predicting strain) and chronic effects (i.e., history of exposure being associated with reduced reversibility in strain). Data were collected from 483 respondents who were at the end of their vocational training. The results supported the hypotheses, in that not all JDC constellations could be empirically identified, the majority of participants was in rather favorable constellations, and the differences between constellations, in terms of levels of demands and control, were more subtle than suggested by theoretically predefined constellations. Because the linear and quadratic solutions were largely comparable, we decided to adopt the linear ones. The expected cumulative and chronic effects were mostly confirmed: Unfavorable JDC constellations were associated with poorer health and well-being than favorable ones, when controlling for the initial level of the respective outcome variable, demographic variables, and for cumulative private stressors (cumulative effects). These differences largely remained after further adjustments for current conditions at work (chronic effects). (PsycINFO Database Record

Hohe Arbeitszufriedenheit trotz enormer Arbeitsbelastung – Warum das ephorale Amt zufrieden stimmt

Abstract The data from a survey among Protestant pastoral leaders is presented in detail. It shows that the results can be explained by the job demand-control model. The church on the one hand leaves a leeway in decision making and on the other hand seems to be undecided in what structures it prefers.

Self-employment and work-related stress: The mediating role of job control and job demand

Drawing upon the Job Demand-Control (JDC) model, this study investigates differences in work-related stress between the self-employed and wage workers. The JDC model postulates that job demand increases work-related stress, whereas job control reduces it (also by weakening the effect of job demand on work-related stress). Based on this model, we predict that the self-employed experience less work-related stress than wage workers. Empirical analysis of a longitudinal sample from Australia (2005–2013) confirms our expectations and demonstrates that job control fully mediates the negative relationship between self-employment and work-related stress. Further analyses show that self-employed individuals with employees experience more work-related stress than those without employees because of higher job demand.

One hundred years of work design research: Looking back and looking forward.

In this article we take a big picture perspective on work design research. In the first section of the paper we identify influential work design articles and use scientific mapping to identify distinct clusters of research. Pulling this material together, we identify five key work design perspectives that map onto distinct historical developments: (a) sociotechnical systems and autonomous work groups, (b) job characteristics model, (c) job demands-control model, (d) job demands-resources model, and (e) role theory. The grounding of these perspectives in the past is understandable, but we suggest that some of the distinction between clusters is convenient rather than substantive. Thus we also identify contemporary integrative perspectives on work design that build connections across the clusters and we argue that there is scope for further integration. In the second section of the paper, we review the role of Journal of Applied Psychology (JAP) in shaping work design research. We conclude that JAP has played a vital role in the advancement of this topic over the last 100 years. Nevertheless, we suspect that to continue to play a leading role in advancing the science and practice of work design, the journal might need to publish research that is broader, more contextualized, and team-oriented. In the third section, we address the impact of work design research on: applied psychology and management, disciplines beyond our own, management thinking, work practice, and national policy agendas. Finally, we draw together observations from our analysis and identify key future directions for the field. (PsycINFO Database Record

Challenged and satisfied: the role of organisational ownership and employee involvement

This study aims to offer a more fine-grained approach to our understanding of the relationship between job stress and job satisfaction. Building on organisational theory and Job Demand-Control model, we investigated an important institutional characteristic – organisational ownership – as an additional moderator to influence the interactive effects of job demands and control upon job satisfaction. Using data collected from 1838 Chinese retail sector employees, we found that this three-way interaction was strongest for employees working in foreign-invested firms, who experienced higher employee involvement at work and perceived a high level of challenge-related stress. The relationship was weakest for employees in state-owned enterprises who reported low levels of both employee involvement and challenge-related stress. Our study constitutes an early attempt to assess the impact of institutional characteristics such as ownership on aspects of human resources management, and highlights the need for further research to recognise the importance of such characteristics as contextual factors that influence the effect of organisational practices and the work environment upon individual work-related outcomes. The paper’s concluding sections elaborate on the contributions our research makes both to theory as well as to the practicalities faced by human resource managers in contexts such as China.

Occupational stress in assembly line workers in electronics manufacturing service and related influencing factors

Objective: To investigate occupational stress in assembly line workers in electronics manu-facturing service (EMS) and related influencing factors. Methods: From June to October, 2015, a cross-sectional survey was performed for 5 944 assembly line workers in EMS (observation group) and 6 270 workers from other posts (non-assembly line workers and management personnel; control group) using the self-made questionnaire for basic information, job demand-control (JDC) model questionnaire, and effort-reward imbalance (ERI) model questionnaire to collect respondents' basic information and occupational stress. Results: The observation group had significantly lower work autonomy, social support, and work reward scores than the control group (2.72 ± 0.63/3.64 ± 0.68/4.06 ± 0.80 vs 3.00 ± 0.67/3.83 ± 0.68/4.24 ± 0.75, t=23.53, 15.41, and 12.70, all P<0.05) , as well as significantly higher work effort and job involvement scores than the control group (2.34±0.78/2.48±0.78 vs 2.21±0.80/2.33±0.77, t=-9.08 and-10.90, both P<0.05). The observation group had significantly higher proportions of workers with occupational stress determined by JDC and ERI models than the control group (64.5%/12.7% vs 52.6%/9.9%, χ2=182.26 and 23.41, both P<0.05). Female sex, migrant workers, working time >60 hours/week, and sleeping time <7 hours/day were major risk factors for occupational stress in JDC model; education background of Bachelor's degree or above, working time >60 hours/week, and sleeping time<7 hours/day were major risk factors for occupational stress in ERI model, while female sex and a high monthly income reduced the risk of occupational stress in ERI model. Conclusion: Assembly line workers in EMS are a relatively vulnerable group and have a high degree of occupational stress. Working time >60 hours/week and sleeping time <7 hours/day are major risk factors for occupational stress.

How does auditors’ work stress affect audit quality? Empirical evidence from the Chinese stock market

With reference to the Job Demands–Control Model, we empirically examine the effect of auditors’ work stress on audit quality using a sample of Chinese A-share listed companies and their signature auditors from 2009 to 2013. The results show that (1) there is generally no pervasive deterioration in audit quality resulting from auditors’ work stress; (2) there is a significant negative association between work stress and audit quality in the initial audits of new clients; and (3) the perception of work stress depends on auditors’ individual characteristics. Auditors from international audit firms and those in the role of partner respond more strongly to work stress than industry experts. Auditors tend to react more intensively when dealing with state-owned companies. We suggest that audit firms attach more importance to auditors’ work stress and rationalize their allocation of audit resources to ensure high audit quality.

Factors Associated with Job Stress among Ambulance Nurses in Bangkok, Thailand.

OBJECTIVE: to explore the factors associated with job stress among the ambulancenurses in nine zones of Bangkok Emergency Medical Service (EMS).MATERIALS AND METHODS: Multistage random sampling was conductedbetween December 2015 and February 2016. Two hundred and forty-five ambulancenurses of network hospitals in nine zones of Bangkok EMS who had at least 40hours EMS training and at least six months work experiences on ambulance wereselected as study samples. A self-administered questionnaire with specific questionsto explore variables such as socio-demographics, work characteristics, generalwell-being, employee engagement, role and social support was used. Job stress wasevaluated using the Karasek’s Job Demand-Control model (JCQ). The predictivefactors influencing job stress were analyzed by using Chi-square and multiplelogistic regressions.RESULTS: A total of 245 ambulance nurses were enrolled in the study. One third(33.5%) of ambulance nurses developed high work stress. A statistically significantassociation was observed between job stress and older age (OR = 0.94, 95% CI:0.89 - 0.99), higher incomes (OR = 0.26, 95% CI: 0.09 - 0.69), higher educationlevel (OR = 4.17, 95% CI: 1.13 - 15.47), more work experience (OR = 0.32, 95%CI: 0.12 - 0.88), perception of urgent task (OR = 8.00, 95% CI: 1.44 - 44.73), poorgeneral well-being (OR = 2.36, 95% CI : 1.00 - 5.55), low superior support (OR =12.50, 95% CI: 4.62 - 33.78), low peer support (OR = 3.27, 95% CI: 1.30 - 8.21),role ambiguity (OR = 12.45, 95% CI: 4.77 - 32.51), and role conflict (OR = 14.48,95% CI: 5.14 - 40.82).CONCLUSION: The executive and nursing administrators should be aware of jobstrain among ambulance nurses particularly in the younger age group with less than5 years of working experience. Specific training programs with supervision and peersupport should be provided. Stress management should be commenced in nursingeducation. The clarity of role and duty together with appropriate work schedule shouldbe considered to avoid the stressful situation which in turn will reduce job stress. Thisstudy is the first investigation that quantifies the strength of association between jobstress and the various factors among ambulance nurses, thereby enabling themanagement to implement logical and preventive strategies regarding work-relatedstress and improve the quality of care in the future.

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

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.

Work Stressors in Late Midlife and Physical Functioning in Old Age.

The aim of this study was to explore the relationship between work stressors in late midlife and physical functioning in old age. Two linked nationally representative Swedish surveys were used: the 1991 Level of Living Survey (age 57-65) and the 2011 Swedish Panel Study of Living Conditions of the Oldest Old. Work stressors were measured with the job demand-control model and physical functioning in old age with physical performance tests, lung function tests, and self-reported mobility. Ordered logistic and linear regressions were performed ( n = 166-214). High demands, low control, and high strain (i.e., high demands combined with low control) were associated with limited physical functioning in women. Low control and passive jobs were associated with limited physical functioning in men. Work stressors in late midlife are important predictors of physical functioning in older adults. However, women and men seem to be vulnerable to different work stressors.

A longitudinal person-centred approach to the job demands-control model

We used a longitudinal design and a person-centred methodology to test the strain and learning hypotheses of the job demands–control model among Finnish employees (n = 926), who were followed-up at three time points covering a period of 2 years (2008–2010). First, we identified longitudinal subgroups in demands and control across three measurement points. Second, we examined how these subgroups differed in strain (job exhaustion) and motivation-related outcomes (vigour at work, work–family enrichment). Growth mixture modelling revealed four subgroups: “stable high strain”, “stable low strain”, “increasing control”, and “decreasing control”. The stable high- and low-strain subgroups also differed in the outcomes studied (exhaustion, work–family enrichment) as suggested by the demands–control model. The findings also suggest that job control is subject to changes over time and that these changes are likely to be associated with changes in employee outcomes. Malleability of job control should be kept in mind in job stress interventions, likewise the fact that some employees suffer from chronic job stress.