title: Impact of mental disorders on work performance in a community sample of workers in Japan: the World Mental Health Japan Survey 2002-2005.
abstract: Most studies that investigate the impact of mental disorders on work performance have been conducted in Western countries, but this study examines the impact of common mental disorders on sick leave and on-the-job work performance in a community sample of Japanese workers. Data from the World Mental Health Japan survey were analyzed. A subsample of 530 workers aged 20-60years were interviewed using the WHO Composite International Diagnostic Interview 3.0. The WHO Health and Work Performance Questionnaire, was used to assess sick days and on-the-job work performance for the previous 30days. Linear regression was used to estimate the impact of mental disorders on these indicators of work performance over 12months. Mood disorders, including major depressive disorder, and alcohol abuse/dependence were significantly associated with decreased on-the-job performance. There were no significant associations between mental disorders and sick/absent days. Consistent with previous studies, major depression has a great impact on on-the-job work performance in Japan. The lost productivity was estimated at approximately 28-30 lost days per year. A similar decrease in on-the-job work performance was found for alcohol abuse/dependence, which is stronger than that in other countries, probably attributable to greater tolerance of problematic drinking at Japanese worksites.
authors.affiliation: Health Administration and Psychosocial Factor Research Group, National Institute of Occupational Safety and Health, Japan, Kawasaki, Kanagawa, Japan. tsuchiya@h.jniosh.go.jp
authors.forename: Masao
authors.initials: M
authors.lastname: Tsuchiya
authors.forename: Norito
authors.initials: N
authors.lastname: Kawakami
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Ono
authors.forename: Yoshibumi
authors.initials: Y
authors.lastname: Nakane
authors.forename: Yosikazu
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Akira
authors.initials: A
authors.lastname: Fukao
authors.forename: Hisateru
authors.initials: H
authors.lastname: Tachimori
authors.forename: Noboru
authors.initials: N
authors.lastname: Iwata
authors.forename: Hidenori
authors.initials: H
authors.lastname: Uda
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Nakane
authors.forename: Makoto
authors.initials: M
authors.lastname: Watanabe
authors.forename: Masashi
authors.initials: M
authors.lastname: Oorui
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Naganuma
authors.forename: Toshiaki A
authors.initials: TA
authors.lastname: Furukawa
authors.forename: Masayo
authors.initials: M
authors.lastname: Kobayashi
authors.forename: Tadayuki
authors.initials: T
authors.lastname: Ahiko
authors.forename: Tadashi
authors.initials: T
authors.lastname: Takeshima
authors.forename: Takehiko
authors.initials: T
authors.lastname: Kikkawa
mesh_terms: D000328:Adult; D000367:Age Factors; D004651:Employment / Q000706:statistics & numerical data*; D005260:Female; D006306:Health Surveys; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D001523:Mental Disorders / Q000145:classification / Q000453:epidemiology* / Q000523:psychology*; D008875:Middle Aged; D015995:Prevalence; D012111:Residence Characteristics; D012189:Retrospective Studies; D013223:Statistics as Topic; D011795:Surveys and Questionnaires; D013997:Time Factors; D055815:Young Adult