Psychosocial workplace factors and alcohol-related morbidity: a prospective study of 3 million Swedish workers

An overview of work-related stress assessment

OBJECTIVE

Work-related stress (WRS) is associated with the development of various health issues and long-term absence from the workplace. Adequate measurement of WRS is essential to assess its prevalence, risks, and effectiveness of preventive interventions. The aim of this review was to provide an overview of different categories of WRS assessment: 1) self-assessment, 2) external assessment, and 3) biomarkers.

METHODS

The databases MEDLINE, PsycINFO, EMBASE, CINAHL, and Web of Science have been searched until July 2024 for studies comprising self-assessment or external assessment of WRS, and WRS biomarkers. The self-assessment studies were further evaluated following the COSMIN guidelines.

RESULTS

In this review, a total of 15,749 articles were screened. The final analysis included 53 studies on self-assessment of WRS, 33 articles on external assessment of WRS and 167 articles on stress biomarkers. Within self-assessment studies, four instruments were included in the analysis: Job Content Questionnaire, Effort Reward Imbalance Questionnaire, Copenhagen Psychosocial Questionnaire II and the Demand-Control-Support Questionnaire. The studies applying external assessment used job-exposure matrices, work register data, ethnography, digital tools, and external observation. The identified WRS biomarkers were associated with the sympathetic adrenal medullary axis, the hypothalamic pituitary adrenal axis, immune response and inflammation, and haemostatic, metabolic and (epi)genetic biomarkers.

CONCLUSION

The available evidence does not support the claim that there is a singular golden standard for assessing WRS. Inclusion of objective parameters and the interaction with subjective parameters and biological markers has to be studied to receive a broader view of WRS.

Educational differences in alcohol-related morbidity and the role of working conditions: a Swedish register-based cohort study

This study aims to investigate the relationship between education and alcohol-related morbidity and the role that low job control and heavy physical workload play in explaining these associations among men and women in Sweden. This register-based cohort study (SWIP cohort) includes over three million individuals registered in Sweden in 2005. Job control and physical workload were measured using a job exposure matrix linked to the index person based on their registered occupation at baseline. Alcohol-related morbidity was measured through diagnoses in the national patient registers between 2006 and 2020. Cox proportional hazards regression models were built to estimate associations between education and alcohol-related morbidity. Reductions in hazard ratios (HRs) were calculated after adjusting for job control, physical workload, and other covariates. Models were also stratified by sex. Lower levels of education predicted a higher risk of alcohol-related morbidity (HR: 2.55 95% confidence interval: 2.49-2.62 for the lowest educated compared to the highest). Low job control and heavy physical workload both played roles in explaining educational differences in alcohol-related morbidity even after accounting for sociodemographic and health factors (15.1% attenuation for job control and 18.3% for physical workload among the lowest educated). Physical workload explained a larger proportion of the associations among men compared to women. Lower levels of education were associated with an increased risk of alcohol-related morbidity and working conditions partly explained these associations beyond what was explained by sociodemographic and health factors. Improving working conditions could therefore prevent some cases of alcohol-related morbidity.

The role of job strain in the relationship between depression and long-term sickness absence: a register-based cohort study

PURPOSE

Though individuals with depression and those with poor working conditions are more likely to be on long-term sickness absence (LTSA), less is known about how working conditions may modify the associations between depression status and LTSA. This study aims to examine the association between depression and LTSA among Swedish workers with different levels of job strain and its individual components (job demands and job control).

METHODS

All Swedish workers 30 - 60 years old (N = 3,065,258) were studied in 2005. At baseline (2005-2010), workers were categorized as: without depression, being prescribed antidepressants, and being in inpatient/outpatient care. Job strain was measured using a Swedish Job Exposure Matrix, and data on LTSA were obtained from 2011 to 2021. The association between depression and LTSA was assessed using Cox proportional-hazards regression stratified by categories of job strain.

RESULTS

Compared to workers without depression, workers with depression had higher risk of LTSA across all job strain levels. Depression was associated with the highest hazards of LTSA in active jobs, but a similar population attributable fraction (PAF) was found across categories of job strain, indicating similarities between the different categories.

CONCLUSION

There was evidence of a moderating effect of job strain in the relationship between depression and LTSA, but also evidence that this was due to differences in baseline depression prevalence in the different job strain categories. Future research is needed to determine alternative factors which could be relevant for reducing LTSA among those who have already developed depression.

Prevalence of problem drinking in the Swedish workforce: differences between labour market industries based on gender composition and main job activity

BACKGROUND

Identifying problem drinking patterns across industries is essential for addressing drinking problems in the workforce. Still, it is not well understood how problem drinking differs across industries and whether it is associated with industry gender composition. This study aimed to measure the prevalence of problem drinking (PPD) across Swedish industries and investigate possible associations between gender-typed industries and problem drinking.

METHODS

9,155 current workers were selected from the Swedish Longitudinal Occupational Survey of Health (SLOSH) data collected in 2020. Participants' work industries were identified through the Swedish Standard Industrial Classification (SNI) codes. Seven gender-typed industry categories were created based on gender composition and main job activity in each industry. Self-reported problem drinking was measured using a slightly modified Cut-down, Annoyed, Guilt, Eye-opener (CAGE) questionnaire and a cut-off score 2 was used to determine problem drinking. Poisson regression with robust standard errors was used to investigate the association between gender-typed industries and problem drinking.

RESULTS

PPD in the workforce was 6.6%. Men (8.5%) had a higher prevalence than women (5.3%). Across industries, PPD varied from 2.3% in Water supply and waste management to 15.4% in Mining and quarrying. The highest prevalence for men was in Mining and quarrying (18.2%), whereas for women it was in Construction (11.1%). Within gender-typed industries, the highest PPD was in male-dominated Goods and Energy Production (7.7%), and the lowest was in female-dominated Health and Social Care (4.7%). In the regression analysis, both Education (aPR: 1.39, p = 0.03) and Labour-intensive Services (aPR: 1.39, p = 0.02) had higher adjusted prevalence ratios (aPR) compared with Health and Social Care. However, there was no significant difference in aPR among gender-typed industries when considering the gender composition of industries only.

CONCLUSIONS

PPD in the Swedish workforce varied significantly across industries, with differences observed between men and women. Problem drinking differed between industries when categorized by gender composition and main job activity, but not when categorized by gender composition only. Future research should investigate how industry-specific psychosocial factors influence individual alcohol consumption.

Hazardous alcohol consumption across different industries in Sweden: a pooled cross-sectional study

AIM

The current study aims to (i) examine differences in hazardous alcohol consumption across different industries in Sweden and (ii) assess to what degree any such difference can be attributed to a differential distribution of nicotine use, health, and work environments among individuals working in these industries.

METHODS

A pooled cross-sectional study was conducted including all participants of the survey of Health, Work Environment, and Lifestyle Habits between 2012 and 2023 (n = 54 378), collected by an occupational health service company (Feelgood). The survey contained self-reported information on alcohol use, industry, nicotine use, health, and work environment. Crude and adjusted odds ratios with 95% confidence intervals were obtained by pooled logistic regression analyses.

RESULTS

Hazardous alcohol use was highly prevalent in the current study population (37%), especially among individuals in the accommodation/food service, arts/entertainment/recreation, and the construction industry. Compared to individuals working in education, individuals in these industries had >1.6-fold increased odds of reporting hazardous alcohol consumption. Differences in nicotine use and physical work environment between the industries explained some of the differences in hazardous alcohol consumption between industries, while differences in health and psychosocial work environment had limited effects on the estimates.

CONCLUSION

We identified several industries in the Swedish workforce where hazardous alcohol use is highly prevalent. While differences in nicotine use, health, and work environment explained a part of these risk differences, most of the risk differences remained.

Can psychosocial risk factors mediate the association between precarious employment and mental health problems in Sweden? Results from a register-based study

OBJECTIVES

The aim of this study was to examine the mediating effect of the psychosocial work environment on the association between precarious employment (PE) and increased risk of common mental disorders (CMD), substance use disorders and suicide attempts.

METHODS

This longitudinal register-study was based on the working population of Sweden, aged 25-60 years in 2005 (N=2 552 589). Mediation analyses based on a decomposition of counterfactual effects were used to estimate the indirect effect of psychosocial risk factors (PRF) (mediators, measured in 2005) on the association between PE (exposure, measured in 2005) and the first diagnosis of CMD, substance use disorders, and suicide attempts occurring over 2006-2017.

RESULTS

The decomposition of effects showed that the indirect effect of the PRF is practically null for the three outcomes considered, among both sexes. PE increased the odds of being diagnosed with CMD, substance use disorders, and suicide attempts, among both men and women. After adjusting for PE, low job control increased the odds of all three outcomes among both sexes, while high job demands decreased the odds of CMD among women. High job strain increased the odds of CMD and suicide attempts among men, while passive job increased the odds of all three outcomes among women.

CONCLUSION

The results of this study did not provide evidence for the hypothesis that psychosocial risks could be the pathways linking precarious employment with workers` mental health. Future studies in different social contexts and labour markets are needed.

Heavy Drinking by Occupation in Spain: Differences Between Weekdays and the Weekend

Estimating occupational disparity in heavy drinking jointly for weekdays and the weekend may be misleading for prevention purposes, because reasons for disparity in both periods may differ. The main objective was to assess occupational disparity in heavy average drinking (HAD) by week period and sex. 42,108 employees aged 16-64 were recruited from national surveys in Spain between 2011 and 2020. The outcome was HAD, defined as daily alcohol intake over 20 g (men) or 10 g (women). Occupation was classified in 15 categories. HAD adjusted prevalence ratios (HAD-aPRs) taking all occupations as reference, and relative adjusted excess prevalences (HAD-aEPs) comparing the weekend to weekdays in each occupation, were estimated using Poisson regression models with robust variance adjusted for sociodemographic and health covariates. The HAD-aPRs comparing each occupation with all occupations ranged 0.63-1.92 on weekdays and 0.65-1.45 on the weekend, with the highest aPRs on weekdays in construction, hospitality and primary-sector workers (1.92-1.62). The weekend-weekdays HAD-aEPs by occupation ranged 2.60-8.33, with the highest values in technicians/administrators, other professionals, teachers and health professionals (8.33-6.44). The global aEP was higher in women (6.04) than in men (3.92), especially in occupations just mentioned (8.70-11.73 in women vs. 3.64-6.32 in men). There was a considerable relative disparity in HAD risk between occupations on weekdays, with the highest risks in certain low-skilled occupations. Such disparity decreased on the weekend. The relative weekend increase in HAD risk was greater in women and in certain high-skilled occupations. This should be considered when designing prevention interventions on harmful drinking.

Association between psychosocial working conditions and well-being before retirement: a community-based study

Psychosocial working conditions have been linked to mental health outcomes, but their association with well-being is poorly studied. We aimed to investigate the association between psychosocial working conditions and well-being before retirement, and to explore the role of gender and leisure activities in the association. From the Swedish National Study on Aging and Care in Kungsholmen, 598 community dwellers aged 60-65 years were included in the cross-sectional study. Lifelong occupational history was obtained through an interview. Job demands and job control in the longest-held occupation were graded with job exposure matrices. Psychosocial working conditions were classified into high strain (high demands, low control), low strain (low demands, high control), passive job (low demands, low control), and active job (high demands, high control). Well-being was assessed with the 10-item version of positive and negative affect schedule, and scored using confirmatory factor analysis. Engagement in leisure activities was categorized as low, moderate, and high. Data were analyzed using linear regression. Both high job control and high job demands were dose-dependently associated with higher well-being. Overall, compared to active jobs, passive jobs were associated with lower well-being (β -0.19, 95% CI -0.35 to -0.02, P = 0.028). Passive (β -0.28, 95% CI -0.51 to -0.04, P = 0.020) and high strain (β -0.31, 95% CI -0.52 to -0.10, P = 0.004) jobs were associated with lower well-being in men, but not in women. The association between passive jobs and well-being was attenuated by high leisure activities, while the association between high strain and well-being was magnified by low leisure activities. In conclusion, negative psychosocial working conditions are associated with poor well-being, especially in men. Leisure activities may modulate the association. Our study highlights that promoting favorable working conditions can be a target to improve well-being among employees and active participation in leisure activities is encouraged to cope with work-related stress for better well-being.

Trajectories of psychosocial working conditions and all-cause and cause-specific mortality: a Swedish register-based cohort study

OBJECTIVES

While psychosocial working conditions have been associated with morbidity, their associations with mortality, especially cause-specific mortality, have been less studied. Additionally, few studies considered the time-varying aspect of exposures. We aimed to examine trajectories of job demand-control status in relation to all-cause and cause-specific mortality, including cardiovascular diseases (CVD), suicide, and alcohol-related mortality.

METHODS

The study population consisted of around 4.5 million individuals aged 16-60 years in Sweden in 2005. Job control and demands were respectively measured using job exposure matrices (JEM). Trajectories of job control and demands throughout 2005-2009 were identified using group-based trajectory modelling, and job demand-control categories were subsequently classified. Deaths in 2010-2019 were recorded in the national cause of death register. Cox regression models were used.

RESULTS

A total of 116 242 individuals died in 2010-2019. For both job control and demands, we identified four trajectories, which were parallel to each other and represented four levels of exposures. Low control and passive jobs were associated with higher all-cause, CVD, and suicide mortality among both men and women. High strain jobs were associated with higher all-cause and CVD mortality among men, while low control, passive jobs, and high strain jobs were associated with higher alcohol-related mortality among women.

CONCLUSIONS

The trajectories identified may suggest stable levels of job control and demands over time. Poor psychosocial working conditions are related to all-cause and cause-specific mortality, and these patterns vary to some extent between men and women.

Job demands and job control and their associations with disability pension-a register-based cohort study of middle-aged and older Swedish workers

OBJECTIVES

Job demands and control at work and their combination, job strain, have been studied in relation to risk of disability pension (DP) previously. In the present study, based on registry data, we aimed to deepen the knowledge by analyzing major disease groups among the DPs, dose-response shape of the associations, and potential confounding effects of physical workload.

METHODS

Approximately 1.8 million workers aged 44 or older and living in Sweden in 2005 were followed up for 16 years, up to a maximum of 65 years of age. We linked mean values of job demands and job control, estimated in a job-exposure matrice (JEM) by gender, to individuals through their occupational titles in 2005. These values were categorized by rank order, and, for the construction of job-strain quadrants, we used a median cut-off. Associations with DP were estimated in Cox proportional-hazards models.

RESULTS

In models accounting for covariates including physical workload, low levels of job control were associated with higher risk of DP among both men and women. This association was most clear for DP with a psychiatric diagnosis, although a dose-response shape was found only among the men. High levels of job demands were associated with decreased risk of DP across diagnoses among men, but the same association varied from weak to non-existing among women. The high- and passive job-strain quadrants both showed increased risk of DP with a psychiatric diagnosis.

CONCLUSION

The results suggest that, at the occupational level, low job control, but not high job demands, contributes to an increased incidence of DP, particularly regarding DP with a psychiatric diagnosis.

Ist Stress am Arbeitsplatz ein Thema für den kardiologischen Alltag? Evidenz, Erkennung und Therapie aversiver Stressbedingungen im Arbeitsumfeld

In modernen Industriegesellschaften verbringen die Menschen die aktivste Zeit ihres Lebens in beruflicher Umgebung, die damit weitgehend Alltag und Lebensqualität bestimmt. Immer mehr verschwimmen die Grenzen zwischen Privatem und Beruflichem. Neben „klassischem“ Arbeitsstress – häufig definiert als Missverhältnis von hohen Anforderungen bei gleichzeitig geringen Entscheidungsmöglichkeiten oder als Missverhältnis zwischen Arbeitseinsatz und Belohnung – gehören u. a. Überarbeitung, Mobbing und Arbeitsplatzverlust sowie negative Arbeitsplatzbedingungen zu den Belastungen, die seelische und körperliche gesundheitliche Probleme auslösen können. Evidenz aus Megastudien mit > 100000 Teilnehmern belegt die Bedeutung von Arbeitsstress als Risikofaktor (RF) für Hypertonie, Schlafstörungen und Depressionen. Unter Arbeitsstress werden häufig gesundheitsgefährdende Verhaltensweisen als Kompensationsversuche eingesetzt. Andauernder Arbeitsstress wird damit zu einem signifikanten RF für ischämische Herzerkrankungen, zerebrovaskuläre Ereignisse und Diabetes mellitus. Arbeitsstress sollte daher in der kardiologischen Praxis exploriert werden. Grundzüge einer auf Arbeitsstress fokussierten Gesprächsführung für den Alltagseinsatz werden vorgestellt.

Job control, job demands and job strain and suicidal behaviour among three million workers in Sweden

OBJECTIVE

To investigate the association between job control, job demands and their combination (job strain) and suicide attempts and deaths among male and female workers in Sweden.

METHODS

Job control and demands were measured separately for men and women using a job exposure matrix, which was linked to around three million individuals based on their occupational title in 2005. Suicide attempts and deaths were measured in the hospital and cause of death registers from 2006 to 2016. HRs were estimated using discrete proportional hazards models with annually updated age as the time axis. Models were adjusted for sociodemographic, family, health, labour market and childhood factors, as well as the time-varying effects of unemployment, sick leave and family factors during follow-up.

RESULTS

Low job control was associated with an increased risk of suicide attempts and deaths among both men and women while high job demands tended to be associated with a decreased risk. The combination of job control and job demands (job strain) reflected the increased risk of low control jobs and the decreased risk of high demand jobs. Associations were attenuated but still present after adjustments.

CONCLUSIONS

Low job control is related to suicide attempts and deaths, and this is only partially explained by important covariates measured both prebaseline and during follow-up. Attempts to increase job control among workers may be beneficial in preventing suicide.