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The article offers information on a study in which a randomized controlled trial was conducted in order to evaluate the effect of sleep hygiene education and behavioral therapy among day-shift white-collar employees working for an information-technology service company in Japan. It informs that sleep hygiene education includes aspects of lifestyle and behavior. According to the study individual behavioral training has significantly improved the sleep quality of workers after three months.

The article offers information on a study to evaluate the effect of a combined sleep hygiene education and behavioral approach program on sleep quality in workers suffering from insomnia. The study consists of a randomized controlled trial at a design engineering unit in Japan which includes program on relaxation training, stimulus control and sleep restriction. The study concludes that education program significantly improved the sleep quality of workers suffering with insomnia.

The article focuses on a study to check whether autonomic nervous system activity during sleep is related to fasting glucose or glycated hemoglobin (HbA1c) in individuals under normal or impaired fasting glucose tolerance conditions. It informs that 77 Japanese healthy workers were examined under high frequency (HF) and the ratio of low frequency to high frequency (LF/HF) obtained by pulse wave analysis to estimate the autonomic nervous system activity.

The article focuses on near miss-based analysis which has been recently suggested to be more important in the medical field than to adverse events in the industrial field for Japanese nurses working at teaching hospitals. It validates the utility of near miss-based analysis in the medical fields by investigating predictors of near misses and adverse events. It suggests a negligible difference between choosing near miss or adverse event-based analysis in the medical field.

The article focuses on a controlled clinical trial conducted on the workers of an information technology company regarding one hour sleep hygiene education after which the impact of the experiment was investigated. It presents contents of this program which include review of sleep habits, sleep hygiene education and the establishment of sleep habit goals. It suggests providing sleep hygiene education to workers in a wide range of occupations including shift workers.

The article discusses a study that determines the efficacy of cognitive behavioral therapy (CBT) training using electronic mail (e-mail) in the workplace. The researchers examine the efficacy of CBT by conducting a clinical controlled trial to evaluate its effects. Study reveals that using CBT through brief e-mail is effective in improving feelings of depression in workers.

The article presents information on a study conducted to determine the differences in medical error risk among nurses who work in a two- andthree-shift systems. The cohort study was conducted using a log Poisson equation model and reports that the results show higher frequencies of adverse events in the three-shift system than the two-shift system over a duration of six months.

The article focuses on a study related to the organizational justice with regard to the promotion of employee health in Japan. The organizational justice scale (OJS) comprising 20 items in four dimensions were translated from English to Japanese language. Employees from manufacturing companies were asked to respond to the Japanese version of OJS questionnaires. The study found that the OJS in the Japanese version had higher reliability and construct validity as an employee health predictor.

The article discusses the impact of the effort-reward imbalance (ERI), a work-stress model, on the health-related quality of life (HRQL) of Japanese working men. Consequently, about 1,096 employees from a manufacturing plant in Japan were evaluated to assess the HRQL and ERL though the Japanese version of the Short-Form 8 Health Survey (SF-8). However, it is claimed that only 1,057 out of the 1,096 surveyed employees provided valid responses to the questionnaire.

The article focuses on the occupational physicians' study administered to Japanese steel workers on the relationship between sleep-disordered breathing (SDB) and hypertension. According to an animal experiment, a significant increase of the daytime blood pressure was observed after the intermittent airway occlusion on the nocturnal sleep. This, however, was regarded by the Joint National Committee (JNC) as sleep apnea syndrome which is claimed to be an identifiable cause of hypertension.

The article presents a study that examines the relation of depressive symptoms with needlestick injury among first-year medical residents. It reveals that needlestick injury events were associated with depressive symptoms in medical residents without depressive symptoms at the follow-up survey. It also cites the factor causing the failure to determine causality between needlestick injury and depressive symptoms.

The article investigates the association between various occupational stressors and heavy drinking among male workers in different age groups in Japan. For the 18-29 and 50-72 yr-old groups, heavy drinking is related to support from supervisor. For the 30-39 yr-old group, heavy drinking is blamed to intragroup conflict, job control and cognitive demands. While in the 40-49 yr-old group, heavy drinking was related to physical environment, quantitative workload, and underutilization of abilities.

The article examines the factors related to the health-related quality of life (HRQOL) of caregivers who provide continuing home care for the impaired elderly. In this type of care, it is expected that care managers will identify the needs of impaired elderly and their caregivers, manage care service staff members and prepare care plans. Therefore, the support provided by care managers is crucial for caregivers to be able to offer continuing home care for the impaired elderly.

The article offers information about a study which aims to determine the associations of depressive symptoms with regular leisure activity and family social support among the workers in Japan. The Center for Epidemiologic Studies Depression scale was used in evaluating depressive symptoms while multiple logistic regression analysis was used to adjust for potentially associated variables.