Scandinavian Journal of Work, Environment & Health (Sep 2022)

Workplace bullying and risk of suicide and suicide attempts: A register-based prospective cohort study of 98 330 participants in Denmark

  • Paul Maurice Conway,
  • Annette Erlangsen,
  • Matias Brødsgaard Grynderup,
  • Thomas Clausen,
  • Reiner Rugulies,
  • Jakob Bue Bjorner,
  • Hermann Burr,
  • Laura Francioli,
  • Anne Helene Garde,
  • Åse Marie Hansen,
  • Linda Magnusson Hanson,
  • Jonas Kirchheiner-Rasmussen,
  • Tage S Kristensen,
  • Eva Gemzøe Mikkelsen,
  • Elsebeth Stenager,
  • Sannie Vester Thorsen,
  • Ebbe Villadsen,
  • Annie Høgh

DOI
https://doi.org/10.5271/sjweh.4034
Journal volume & issue
Vol. 48, no. 6
pp. 425 – 434

Abstract

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OBJECTIVES: The aim of this study was to analyze whether individuals reporting exposure to workplace bullying had a higher risk of suicidal behavior, including both suicide attempt and death by suicide, than those not reporting such exposure. METHODS: Using a prospective cohort study design, we linked data from nine Danish questionnaire-based surveys (2004–2014) to national registers up to 31 December 2016. Exposure to workplace bullying was measured by a single item. Suicide attempts were identified in hospital registers and death by suicide in the Cause of Death Register. Among participants with no previous suicide attempts, we estimated hazard ratios (HR) and 95% confidence intervals (CI), adjusting for sex, age, marital status, socioeconomic status, and history of psychiatric morbidity. RESULTS: The sample consisted of 98 330 participants (713 798 person-years), 63.6% were women, and the mean age was 44.5 years. Of these participants, 10 259 (10.4%) reported workplace bullying. During a mean follow-up of 7.3 years, we observed 184 cases of suicidal behavior, including 145 suicide attempts, 35 deaths by suicide and 4 cases that died by suicide after surviving a suicide attempt. The fully-adjusted HR for the association between workplace bullying and suicidal behavior was 1.65 (95% CI 1.06–2.58). The HR for suicide attempts and death by suicide were 1.65 (1.09–2.50) and 2.08 (0.82–5.27), respectively. Analyses stratified by sex showed a statistically significant association between workplace bullying and suicidal behavior among men but not women. CONCLUSIONS: The results suggest that exposure to workplace bullying is associated with an elevated risk of suicidal behavior among men.

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