Assessment of job stress dimensions based on the job demands-control model of employees of telecommunication and electric power companies in japan: reliability and validity of the japanese version of the job content questionnaire

Kawakami, Norito; Kobayashi, Fumio; Araki, Shunichi; Haratani, Takashi; Furui, Hikari

doi:10.1207/s15327558ijbm0204_5

Cited by 234 publications

(255 citation statements)

References 16 publications

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“…Workplace social support was calculated as the total of coworker support and supervisor support 24,25) . The internal consistency and factor-and construct-validity of the scale have been confirmed to be excellent among the Japanese population 24) . Workplace bullying was assessed using the Japanese version of the Negative Acts Questionnaire (NAQ) 26,27) .…”

Section: Methodsmentioning

confidence: 99%

Workplace Bullying could Play Important Roles in the Relationships between Job Strain and Symptoms of Depression and Sleep Disturbance

Takaki

Taniguchi

Fukuoka

et al. 2010

Journal of Occupational Health

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The purpose of this study was to assess whether workplace bullying mediates between job strain, evaluated by the job demand-control model, and symptoms of depression and sleep disturbance. Methods: The subjects in this cross-sectional study were recruited from all the workers (N=2,634) at 50 organizations in Japan. Due to missing data, the numbers of subjects included in the analyses varied from 1,646 to 2,062 (response rates varied from 62.5% to 78.2%). Job strain and workplace social support, workplace bullying, depression, and sleep disturbance were assessed using the Japanese versions of the Job C o n t e n t Q u e s t i o n n a i r e , t h e N e g a t i v e A c t s Questionnaire, the Center for Epidemiologic Studies Depression Scale, and the Pittsburgh Sleep Quality Index, respectively. Mediation analysis followed the approach outlined by Baron and Kenny. We quantitatively estimated the mediation effects and tested their significance after adjustment for various combinations of demographic variables and workplace social support. Results: Total effects of job strain index on depression or sleep disturbance were all positive and significant (p<0.05) in both genders. Mediation effects of workplace bullying were also all positive and significant (p<0.05) in both genders. Even after adjustment for workplace social support, the mediation effects were decreased, especially in women, but remained significant (p<0.05). Conclusions: Workplace bullying seems to play important roles in the relationships of job strain with depression or sleep disturbance in both genders. (J Occup Health 2010; 52: 367-374)

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Section: Methodsmentioning

confidence: 99%

Workplace Bullying could Play Important Roles in the Relationships between Job Strain and Symptoms of Depression and Sleep Disturbance

Takaki

Taniguchi

Fukuoka

et al. 2010

Journal of Occupational Health

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“…Available evidence suggests that this is a valid and reliable measure of job stressors in the Japanese population (15). Sedentary job and overtime work were assessed by a self-administered questionnaire.…”

Section: Methodsmentioning

confidence: 99%

Socioeconomic status, workplace characteristics and plasma fibrinogen level of Japanese male employees

Ishizaki¹,

Martikainen²,

Nakagawa³

et al. 2001

Scand J Work Environ Health

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Objectives This study examined the relationships between workplace characteristics and plasma fibrinogen level and assessed the possibility of socioeconomic differences in plasma fibrinogen level being accounted for by workplace characteristics.Methods Cross-sectional questionnaire data from 4343 Japanese male employees were examined with Karasek's demand-control model, as was sedentary job and overtime work. Results Less overtime work, a less sedentary job, and to a less extent, lower job control and low worksite support were related to increased plasma fibrinogen levels. Adjusting for employment grade strongly attenuated or eliminated these relationships. The association of job demands or job strain with plasma fibrinogen level was weak. High plasma fibrinogen in lower socioeconomic groups remained largely unchanged after adjustment for workplace characteristics.Conclusions Workplace characteristics are not significantly related to the plasma fibrinogen levels of male Japanese employees after adjustment for socioeconomic status, and they do not explain socioeconomic differences in plasma fibrinogen levels among these employees.

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“…Job strain was evaluated by the Japanese version of the Job Content Questionnaire (JCQ) developed by Karasek (21), addressing job demands, job control, and social support (22,23). In this study, the interaction between job demands and job control was defined as job strain, and job strain was determined in two ways.…”

Section: Assessment Of Job Strainmentioning

confidence: 99%

Job strain and arteriosclerosis in three different types of arteries among male Japanese factory workers

Michikawa¹,

Nishiwaki²,

Nomiyama³

et al. 2008

Scand J Work Environ Health

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Objectives This study evaluated the association between job strain and subclinical indicators of arteriosclerosis simultaneously in the cerebral artery, the aorta, and the carotid artery. MethodsThe participants in this cross-sectional study consisted of 352 male factory workers between the ages of 24.9 to 55.8 (mean 41.7) years who had not been exposed to any hazardous chemicals in Japan. Job strain was measured using a Japanese version of the Job Content Questionnaire developed by Karasek. The following subclinical indicators of arteriosclerosis were examined by noninvasive procedures: hyperintense spots in T2-weighted images in brain magnetic resonance imaging (MRI), pulse wave velocity of the aorta, and the stiffness parameter of the carotid artery using ultrasound and systolic and diastolic blood pressure.Results After control for potential confounders, high job strain was associated with an increased prevalence of hyperintense spots (adjusted odds ratio 2.53, 95% confidence interval 1.14-5.63), and elevated pulse-wave velocity (adjusted increase in percent 3.5, 95% confidence interval 0.0-6.9). The stiffness parameter tended to be elevated in the high job-strain group although this trend was not statistically significant. Job strain showed no relation to blood pressure. ConclusionsIn this study, job strain was associated with subclinical indicators of arteriosclerosis in different arteries although the association was not statistically significant for the carotid artery. New information is offered by brain MRI for arteriosclerosis in the cerebral artery. An increase in hyperintense spots may explain the link between job strain and cerebrovascular disease.

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Assessment of job stress dimensions based on the job demands-control model of employees of telecommunication and electric power companies in japan: reliability and validity of the japanese version of the job content questionnaire

Cited by 234 publications

References 16 publications

Workplace Bullying could Play Important Roles in the Relationships between Job Strain and Symptoms of Depression and Sleep Disturbance

Workplace Bullying could Play Important Roles in the Relationships between Job Strain and Symptoms of Depression and Sleep Disturbance

Socioeconomic status, workplace characteristics and plasma fibrinogen level of Japanese male employees

Job strain and arteriosclerosis in three different types of arteries among male Japanese factory workers

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