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J Epidemiol Community Health. Jun 1999; 53(6): 359–363.
PMCID: PMC1756890

Overtime, psychosocial working conditions, and occurrence of non- insulin dependent diabetes mellitus in Japanese men


OBJECTIVES: To ascertain the effects of overtime and psychosocial job conditions on the occurrence of non-insulin dependent diabetes mellitus (NIDDM) in Japan. DESIGN: An eight year prospective cohort study. SETTING: An electrical company in Japan. PARTICIPANTS: In 1984, a mailed questionnaire was sent to industrial workers of an electrical company in Japan. After excluding those who had a history of diabetes mellitus or other chronic diseases, 2597 male respondents were prospectively followed up for the succeeding eight years. Data from 2194 (84%) who were completely followed up were analysed. The occurrence of NIDDM during the follow up period was assessed according to the WHO criteria on the basis of an annual screening programme. MAIN RESULTS: The age adjusted incidence of NIDDM was significantly higher in those who worked overtime more than 50 hours per month than in those who worked 25 hours or less per month (p < 0.05). It was significantly higher in those who worked with new technology at baseline than in those who did not (p < 0.05). Cox's proportional hazard model indicated that those who worked overtime more than 50 hours per month had 3.7 times higher risk of NIDDM after controlling for known risk factors (p < 0.01) and those who worked with new technology had 2.4 times higher risk of NIDDM (p < 0.05). CONCLUSIONS: It is suggested that longer overtime and use of new technology are risk factors of NIDDM in Japanese men.


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Selected References

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  • Mikuni E, Ohoshi T, Hayashi K, Miyamura K. Glucose intolerance in an employed population. Tohoku J Exp Med. 1983 Dec;141 (Suppl):251–256. [PubMed]
  • Harrington JM. Shift work and health--a critical review of the literature on working hours. Ann Acad Med Singapore. 1994 Sep;23(5):699–705. [PubMed]
  • Spurgeon A, Harrington JM, Cooper CL. Health and safety problems associated with long working hours: a review of the current position. Occup Environ Med. 1997 Jun;54(6):367–375. [PMC free article] [PubMed]
  • Uehata T. Long working hours and occupational stress-related cardiovascular attacks among middle-aged workers in Japan. J Hum Ergol (Tokyo) 1991 Dec;20(2):147–153. [PubMed]
  • Cesana G, Panza G, Ferrario M, Zanettini R, Arnoldi M, Grieco A. Can glycosylated hemoglobin be a job stress parameter? J Occup Med. 1985 May;27(5):357–360. [PubMed]
  • Surwit RS, Feinglos MN. Stress and autonomic nervous system in type II diabetes. A hypothesis. Diabetes Care. 1988 Jan;11(1):83–85. [PubMed]
  • Surwit RS, Schneider MS. Role of stress in the etiology and treatment of diabetes mellitus. Psychosom Med. 1993 Jul-Aug;55(4):380–393. [PubMed]
  • Johnson JV, Hall EM. Job strain, work place social support, and cardiovascular disease: a cross-sectional study of a random sample of the Swedish working population. Am J Public Health. 1988 Oct;78(10):1336–1342. [PMC free article] [PubMed]
  • Schnall PL, Landsbergis PA, Baker D. Job strain and cardiovascular disease. Annu Rev Public Health. 1994;15:381–411. [PubMed]
  • Cobb S, Rose RM. Hypertension, peptic ulcer, and diabetes in air traffic controllers. JAMA. 1973 Apr 23;224(4):489–492. [PubMed]
  • Netterstrøm B, Kristensen TS, Damsgaard MT, Olsen O, Sjøl A. Job strain and cardiovascular risk factors: a cross sectional study of employed Danish men and women. Br J Ind Med. 1991 Oct;48(10):684–689. [PMC free article] [PubMed]
  • Kawakami N, Araki S, Hayashi T, Masumoto T. Relationship between perceived job-stress and glycosylated hemoglobin in white-collar workers. Ind Health. 1989;27(4):149–154. [PubMed]
  • Alcalay R, Pasick RJ. Psycho-social factors and the technologies of work. Soc Sci Med. 1983;17(16):1075–1084. [PubMed]
  • Kawakami N, Takatsuka N, Shimizu H, Ishibashi H. Effects of smoking on the incidence of non-insulin-dependent diabetes mellitus. Replication and extension in a Japanese cohort of male employees. Am J Epidemiol. 1997 Jan 15;145(2):103–109. [PubMed]
  • Wong O, Brocker W, Davis HV, Nagle GS. Mortality of workers potentially exposed to organic and inorganic brominated chemicals, DBCP, TRIS, PBB, and DDT. Br J Ind Med. 1984 Feb;41(1):15–24. [PMC free article] [PubMed]
  • Kawakami N, Haratani T, Araki S. Effects of perceived job stress on depressive symptoms in blue-collar workers of an electrical factory in Japan. Scand J Work Environ Health. 1992 Jun;18(3):195–200. [PubMed]
  • Kawakami N, Haratani T, Kaneko T, Araki S. Perceived job-stress and blood pressure increase among Japanese blue collar workers: one-year follow-up study. Ind Health. 1989;27(2):71–81. [PubMed]
  • Reaven GM. Banting lecture 1988. Role of insulin resistance in human disease. Diabetes. 1988 Dec;37(12):1595–1607. [PubMed]

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