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The mediating effect of work-life interference on the relationship between work-time control and depressive and musculoskeletal symptoms
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen, Stressforskningsinstitutet.
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen, Stressforskningsinstitutet.
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen, Stressforskningsinstitutet.
Rekke forfattare: 32020 (engelsk)Inngår i: Scandinavian Journal of Work, Environment and Health, ISSN 0355-3140, E-ISSN 1795-990X, Vol. 46, nr 5, s. 469-479Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Objectives Evidence shows that work-time control (WTC) affects health but underlying mechanisms are still unclear. Work-life interference (WLI) might be a step on the causal pathway. The present study examined whether WLI mediates effects on mental and physical health and contrasted these to other causal pathways.

Methods Four biennial waves from the Swedish Longitudinal Occupational Survey of Health (SLOSH, N=26 804) were used. Cross-lagged analyses were conducted to estimate if WLI mediated effects from WTC (differentiating between control over daily hours and time off) to subsequent depressive and musculoskeletal symptoms. Other causal directions (reversed mediation, direct and reversed direct effects) and robustness of mediation (by including covariates) were examined.

Results WLI partially mediated the relationship of WTC (control over daily hours/time off) with both health outcomes. Indirect effect estimates were small for depressive symptoms (-0.053 for control over time off and -0.018 for control over daily hours) and very small for musculoskeletal symptoms (-0.007 and -0.003, respectively). While other causal directions were generally weaker than causal mediational pathways, they played a larger role for musculoskeletal compared to depressive symptoms. Estimates relating to control over time off were in general larger than for control over daily hours.

Conclusions Our results suggest that WLI mediates part of the effect from WTC to mental/musculoskeletal symptoms, but small estimates suggest that (i) WTC plays a small but consistent role in effects on health and (ii) particularly regarding musculoskeletal disorders, other causal directions and mediators need to be further examined.

sted, utgiver, år, opplag, sider
2020. Vol. 46, nr 5, s. 469-479
Emneord [en]
autonomy, flexible work hour, psychosocial factor, working hour, work-life balance, mental health, depression, depressive symptom, musculoskeletal pain, physical health, cohort study, mediation, Swedish Longitudinal Occupational Survey of Health
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-186291DOI: 10.5271/sjweh.3887ISI: 000566336200004PubMedID: 32118284OAI: oai:DiVA.org:su-186291DiVA, id: diva2:1484273
Tilgjengelig fra: 2020-10-28 Laget: 2020-10-28 Sist oppdatert: 2022-02-25bibliografisk kontrollert
Inngår i avhandling
1. The Highs and Lows of Work-Time Control: Exploring the role of control over working hours for health
Åpne denne publikasjonen i ny fane eller vindu >>The Highs and Lows of Work-Time Control: Exploring the role of control over working hours for health
2021 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Flexible work-time arrangements are thought to create ways of aligning work and private life and facilitate recovery. While temporal flexibility is found to generally bolster work–life balance, its effects on health outcomes are less well known. The present thesis seeks to examine if and how perceived control over working hours benefits workers’ health. Utilising a large Swedish cohort study, four empirical studies explored the association of work-time control (WTC) with subsequent mental and physical health as well as the underlying mechanisms and moderating influences.

Study I assessed the factorial structure of an instrument to measure WTC and found two sub-dimensions: control over daily hours (the length, starting and ending times of a workday) and control over time off (the taking of breaks/time/days off, paid and unpaid). Levels of control per sub-dimension were described by demographic and work-related factors for a large sample of Swedish workers. In particular, shift, public sector and female workers reported low levels of WTC.

Study II examined effects of control over daily hours and time off on depressive symptoms. Increasing control over time off was related to decreasing depressive symptoms over time, whereas only initial level of control over daily hours was associated with lower levels of depressive symptoms. For both sub-dimensions of WTC, the direction of this effect was predominantly from perceived control to subsequent depressive symptoms; reversed processes were of less importance.

Study III focused on work–life interference as one step on the causal chain between WTC and depressive symptoms and musculoskeletal complaints, respectively. For both sub-dimensions of WTC, part of the effect on depressive symptoms went through work–life interference. Reversed processes played a role between depressive symptoms and work–life interference only. Control over time off was found to mitigate work–life interference and subsequent depressive symptoms more than control over daily hours, albeit with generally small effects. Regarding musculoskeletal complaints, effects were even smaller and work–life interference appeared to be less important.

Study IV assessed gender differences in the impact of WTC on work–life interference and exhaustion regarding the mediating role of overtime hours. In a sample of knowledge workers, higher control over time off was associated with lower subsequent work–life interference and exhaustion, while control over daily hours was unrelated to both outcomes. Although men worked more overtime hours than women on average, no evidence was found for men with high control over time off/daily hours to perceive more work–life interference/exhaustion due to increased overtime compared to women.

This thesis found that higher levels of WTC were beneficial for a range of health outcomes, which was partly explained by fewer work–life conflicts. While these effects were generally small, control over time off in particular was consistently associated with favourable outcomes in health, work-life balance and working hours. Given that the level of workers’ discretion over working hours varies starkly by work and demographic factors, enhancing the availability of flexible work-time arrangements is in the interest of public health. WTC, with a particular focus on employees’ ability to take time off from work, may improve the daily work–life interface and support a sustainable working life.

sted, utgiver, år, opplag, sider
Stockholm: Department of Public Health Sciences, Stockholm University, 2021. s. 110
Serie
Stockholm Studies in Public Health Sciences, ISSN 2003-0061 ; 5
Emneord
flexible work, flexible work-time arrangements, autonomy, psychosocial working conditions, longitudinal, mental health, physical health, work-life balance
HSV kategori
Forskningsprogram
folkhälsovetenskap
Identifikatorer
urn:nbn:se:su:diva-197318 (URN)978-91-7911-646-0 (ISBN)978-91-7911-647-7 (ISBN)
Disputas
2021-12-10, lärosal 18, hus 2, Albanovägen 12 and online via Zoom, public link is available at the department website, Stockholm, 13:00 (engelsk)
Opponent
Veileder
Forskningsfinansiär
Forte, Swedish Research Council for Health, Working Life and Welfare, 2013-0448NordForsk, 74809
Tilgjengelig fra: 2021-11-17 Laget: 2021-10-11 Sist oppdatert: 2022-02-25bibliografisk kontrollert

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