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Organisational merger and psychiatric morbidity: a prospective study in a changing work organisation
  1. Ari Väänänen1,
  2. Kirsi Ahola1,
  3. Aki Koskinen1,
  4. Krista Pahkin1,
  5. Anne Kouvonen2
  1. 1Finnish Institute of Occupational Health, Centre of Expertise for Work Organizations, Helsinki, Finland
  2. 2Warsaw School of Social Sciences and Humanities, Wroclaw Faculty, Wroclaw, Poland
  1. Correspondence to Dr Ari Väänänen, Adjunct Professor, Senior Researcher, Finnish Institute of Occupational Health, Centre of Expertise for Work Organizations, Topeliuksenkatu 41 a A, FI-00250 Helsinki, Finland; ari.vaananen{at}ttl.fi

Abstract

Background Prospective studies on the relationship between organisational merger and mental health have been conducted using subjective health indicators. The objective of this prospective occupational cohort study was to examine whether a negative change during an organisational merger is an independent predictive factor of psychiatric morbidity.

Method Survey data on organisational characteristics, health and other factors were collected prior to (1996) and after the merger (2000); register data on psychiatric morbidity were collected at baseline (1/1/1994–30/9/2000) and during the follow-up (1/10/2000–31/12/2005). Participants were 6511 (77% men) industrial employees aged 21–65 years with no register-based diagnosed psychiatric events prior to the follow-up (the Still Working Study). During the follow-up, 252 participants were admitted to the hospital due to psychiatric disorders, were prescribed a psychotropic drug or attempted or committed suicide.

Results A negative self-reported change in the work organisation during the merger was associated with increased risk of postmerger psychiatric event (HR 1.60, 95% CI 1.19 to 2.14). This association was independent of mental health-related factors measured before the merger announcement, such as demographic characteristics, occupational status, personal orientation to life, self-rated health, self-reported psychiatric morbidity or chronic disease.

Conclusion A negative change in work organisation during an organisational merger may elevate the risk for postmerger psychiatric morbidity.

  • Psychiatric disorders
  • prospective studies
  • organisational change
  • mental health DI
  • occupational stress
  • psychiatric
  • psychosocial epidemiology
  • workplace

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Footnotes

  • Funding The research group was financially supported by the Finnish Work Environment Fund (OSH-ERA project, #109395). AV was also supported by the Academy of Finland (#128089).

  • Competing interests None declared.

  • Ethics approval This study was conducted with the approval of the ethics committee of the Finnish Institute of Occupational Health.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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