METHODS: Employees of a Japanese IT company were surveyed using M-R at baseline, and 317 males, who were not under treatment for mental illness and having few depressive symptoms (CES-D<16), were randomly assigned to Group C in which the participants receive a simple report containing scores and charts only or Group M in which participants receive individually tailored stress-management messages added to the simple report. The change in stress symptoms and work and lifestyle related stressors were examined on 206 participants who answered both 2-and 4-month follow-up surveys using M-R. At 2-month survey, those participants exhibited higher depressive symptoms (CES-D≧16) received an additional message from a medical doctor. RESULTS: At 2 months, maintenance of mental wellness and improvement of lifestyle were observed in 7% more participants in the Group M, but the difference was not statistically significant. Of those who scored over 16 on CES-D at 2 months and received a doctor's message, the CES-D score significantly decreased at 4 months in Group M only (p<.01). Somatic stress symptoms also tended to decrease at 2 months in Group M and it maintained up to 4 months. Significantly more participants in Group M (79%) than Group C (68%) maintained mental wellness all through 3 surveys (p<.001). No significant change in work and lifestyle related stressor was observed. CONCLUSIONS: Adding tailored messages to the simple report of M-R was more effective in maintaining mental wellness and improving depressive symptoms. However, to support improvement in work or lifestyle related stressors, complementing the concise report of M-R by extending our center's health care services may be needed. Background and purpose. More than thirty thousand people commit suicide in Japan every year from 1998. Therefore, preventing suicides is one of important issues to be addressed in Japan. Our prefectural government also launched a project of screening for depression among workers in local area from 2007 in order to prevent suicides. Methods and Results: For the project, we performed screening of depression for 475 male and 284 female workers, who work in some small enterprises, during their annual medical checkup in 2007. They answered self-reported question-S196 Int.J. Behav. Med. (2010) 17(Suppl 1):S1-S329 naire including items screening for depression, living alone or not, work arrangement, working time, job demand, physical loads, job control, friendly work place or not, and job satisfaction. Following the first screening, 203 men and 129 women were determined as highly depressive. Among them, 138 men and 97 women were interviewed using CIDI-SS-RR as a second screening. Finally, 21 men and 22 women were detected as ones to be recommended for medical care. Highly depressive men by the first screening were more likely to live alone (p<0.05), worked longer (p<0.05), and had more job demand (p<0.01), more physical loads (p<0.01), less friendly work place (p<0.01), less job satisfaction (p<0.01), and lower job control (p<0.05) than non-highly depressive men. Highly depressive women by the first screening were younger (p<0.05) and had more job demand (p<0.01), more physical loads (p<0.05), less friendly work place (p<0.01), and less job satisfaction (p<0.01) more than non-highly depressive women. Men that were recommended for medical care were more likely to live alone (p<0.05) and had more job demand (p<0.01), more physical loads (p<0.05), less job satisfaction (p<0.01), and less friendly work place (p<0.01) than non-highly depressive men in the first screening. Women that were recommended for medical care were younger (p<0.01) and had more job demand (p<0.01), more physical loads (p<0.01), and less job satisfaction than non-highly depressive women in the first screening. Conclusion: These results suggest that job involved factors relate to a depressive mood of workers. Results: The majority of the ambulance workers had experienced critical incidents in their work. Over time there was a decrease in PTSD symptoms and peritraumatic dissociation, an increase of health complaints, and a significant improvement in psychological well-being. However, correlational analyses indicated a negative significant association between symptoms and psychological wellbeing at the two time points. The predictors of post-traumatic stress disorder were traumatic incident-related, peritraumatic dissociation, psychological distress and subjective health complaints at both assessments. Conclusions: Ambulance personnel are at risk to develop health symptoms due to work related stressors. However, the results suggest that shifts in symptomatology may be associated with the time of the year in which the assessments took place. Further research should explore whether these symptoms increase in peak times of critical incidents over the year. Poor or insufficient sleep is a risk factor of accidents and several illnesses including cardiovascular diseases. We aimed to clarify aspects of shift arrangements which are important for sleep in shift work. The participants were 305 (248 men) aged 25-60 yrs. shift workers in a Finnish airline company. Sleep length, insomnia symptoms and work arrangements were self-rated by the participants. The considered aspects of shifts were: frequency of night shifts, the number of consecutive night shifts, mean and the maximum shift length, frequency of shifts starting before 06:00, quick returns (less than 11 hours between shifts), less than 28 hours of free time after the last nigh shift, a single free day between shift periods, and the regularity of shift system with a question on the direction of rotation (backward vs. forward). Sex and age were included as covariates in all analyses and additional adjustments were done for education and health habits (alcohol use, physical activity, and smoking).