• 한국산업보건학회지
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• 제29권2호
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• pp.226-235
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• 2019

Objectives: The purpose of this study was to investigate whether there were differences in manufacturing industry worker's health issues depending on job stress, fatigue, and health and safety services. Methods: The purpose of the questionnaire survey and its contents were explained to manufacturing industry health personnel, and the questionnaires were collected from 666 workers from 17 manufacturing workplaces. Questionnaires with missing data were excluded from the analysis so a total of 632 questionnaires were included. Results: Overall, 74.1% of the respondents had experienced health issues during the preceding month. The factors affecting worker health were number of workers(OR=1.000034, p=.013), job demand(OR=1.82, p=.009), MFS(OR=1.85, p=.003), provision of safety & health information(OR=1.85, p=.048), wearing protector(OR=2.58, p=.021). Conclusion: It is necessary to strengthen the safety and health education to mitigate hazardous and risk factors. Employers should provide health managers in charge of safety and health education to control workplace risk factors. In case of small businesses, it may be necessary to strengthen safety and health education in existing worker health centers and government support projects.

• Safety and Health at Work
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• 제7권3호
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• pp.251-255
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• 2016

Background: Building demolition can lead to emission of dust into the environment. Exposure to silica dust may be considered as an important hazard in these sites. The objectives of this research were to determine the amount of workers' exposure to crystalline silica dust and assess the relative risk of silicosis and the excess lifetime risk of mortality from lung cancer in demolition workers. Methods: Four sites in the Tehran megacity region were selected. Silica dust was collected using the National Institute for Occupational Safety and Health method 7601 and determined spectrophotometrically. The Mannetje et al and Rice et al models were chosen to examine the rate of silicosis-related mortality and the excess lifetime risk of mortality from lung cancer, respectively. Results: The amount of demolition workers' exposure was in the range of $0.085-0.185mg/m^3$. The range of relative risk of silicosis related mortality was increased from 1 in the workers with the lowest exposure level to 22.64/1,000 in the employees with high exposure level. The range of the excess lifetime risk of mortality from lung cancer was in the range of 32-60/1,000 exposed workers. Conclusion: Geometric and arithmetic mean of exposure was higher than threshold limit value for silica dust in all demolition sites. The risk of silicosis mortality for many demolition workers was higher than 1/1,000 (unacceptable level of risk). Estimating the lifetime lung cancer mortality showed a higher risk of mortality from lung cancer in building demolition workers.

• 한국직업건강간호학회지
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• 제14권1호
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• pp.16-23
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• 2005

Purpose: The Purpose of the study was to suggest how the health manager use to be easy return-to-work of injured workers. Method: The data were collected by the health managers working at the 103 companies over medium size in Incheon, Gyoung-gi and Seoul through interview and report by themselves and analyzed by SAS V8 through t-test. Result: 1. The health managers are consisted of 2 kinds, one is health manager such as physician(10%) or nurse(81%) and the other is safety manager. The former works at the manufacturing company(62.9%), the latter at the service one(42.4%). 2. Management and counseling of occupational and non-occupational diseases, and high risk workers, health education, emergency care, worksite rounding, guidance of personal protector use, and health promotion services were highly performed by health managers. Comparing to these, safety managers performed guidance of job safety, safety management. The difference of two kinds of manager was significant statistically not only the aspect of general job but also related job to the workers of return-to-work after accident. Conclusion: This result shows that health manager can function as a care manager to the workers after return-to-work for adaptation to their job and rehabilitation bio-psycho-socially. But health managers don't have any regulations of encouraging injured workers to get their job again officially.

• 한국응급구조학회지
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• 제8권1호
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• pp.161-168
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• 2004

The workers of limestone industry have relatively higher rate of accident and injury than other industry workers. This survey was conducted to provide the informations for the planning of safety and health educations to prevent the accident and injury. The purpose of this study is to identify the morbidity rate per month and to determine the related health factors, and to find accident experiences of the limestone workers and to analyze the reasons and types of that accidents. The study design was a descriptive survey. Self reporting questionnaires developed by researcher were used for data collection. The subjects of this study were 225 workers in limestone industries in Jecheon city. The statistical methods utilized for data analysis were frequency analysis, $x^2$-test with SPSS-pc(ver.9.0). The results are as follows, 1. The workers morbidity rate per month was 22%, and morbid factors were Flu., G-I trouble, hypertension, orthopedic trauma, external wound, burn, etc., and the related health factors are self-assessment for health, exercise, accessability for medical facilities. 2. 40% of the subjects have experienced the accidents during last 6 months. The types of the accidents were safety violations, traffic accidents and fire accidents. Injury types were external wounds, fracture/amputation and burn. The workers of limestone industry have higher morbidity rate and experiences of accidents. Therefore the more increased safety and health educations than now for both the workers and the managers are needed. And this study could be helpful to increase the quality and the quantity of the educations needed.

• 한국산업보건학회지
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• 제24권3호
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• pp.345-352
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• 2014

Objectives: This study is aimed to describe the current situation about urinary biomarker N-methylformamide(NMF) for workers exposed to N,N-dimethylformamide(DMF) according to industrial classification. Materials: Special health examination records of the workers who had undergone urinary biological monitoring in 2013 were collected. The numbers and percentage of workers, whose urinary NMF values were above the limit of detection(LOD) and above the biological exposure index(BEI) were calculated. Health relatedness with DMF as judged by their doctors was also described. All description was classified according to the $9^{th}$ Korean Standard Industrial Classification(KSIC). Results: It appeared that most workers exposed to DMF belong to manufacturing section(80.7%). The geometric mean(GM) values of urinary NMF were 6.25 mg/L, 3.54, and 3.86 for the manufacturing section, professional, scientific and technical activities section, and for the construction section respectively. In detail, it seemed that division of textiles(except apparel) (GM 7.51 mg/L), division of leather, luggage and footwear(11.59 mg/L), and division of rubber and plastic products(6.89 mg/L) were highly exposed to DMF with a high percentage of workers with urinary NMF values above BEI. This was probably due to the effect of skin absorption that the division of leather, luggage and footwear showed the highest urine NMF GM. Conclusions: It seemed that workers in manufacture industries such as textile, leather, luggage, footwear, rubber and plastic products were highly exposed to DMF. So, efforts should be focused on those industries in order to effectively diminish worker's exposure. Further studies to compare DMF air-monitoring with bio-monitoring according to industrial classification should be considered.

• Safety and Health at Work
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• 제1권2호
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• pp.158-166
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• 2010

Objectives: This study aimed to find gender distinctions in terms of the sociology of the population; to determine work-related factors; to analyze gender differences in daily living, work, sports, and art performances; and to identify gender-related factors that limited performance of daily living and work activities. Methods: A questionnaire was designed that included disabilities of the arm, shoulder, and hand (DASH), accident history, disease history, work duration at current workplace, marital status, job satisfaction, job autonomy, and physical demands of the job. Out of 1,853 workers surveyed, 1,173 questionnaires (63.3%; 987 males, 186 females) included responses to DASH disability and DASH optional work and were judged acceptable for analysis. Results: Upper extremity functional limitation during work and daily living was higher for females than males. The limitations for males increased according to their household work time, accident history, work duration, job satisfaction, physical demand, and job autonomy. Meanwhile, female workers' upper extremity discomfort was influenced by their disease history, job satisfaction, and physical demands. In addition, the size of the company affected male workers' upper extremity function, while marriage and hobbies influenced that of female workers. Conclusion: This study addressed sociodemographic factors and work-related factors that affect each gender's upper extremity function during daily living and working activities. Each factor had a different influence. Further studies are needed to identify the effect that role changes, not being influenced by risks at work, have on musculoskeletal disorders.

• Journal of information and communication convergence engineering
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• 제19권2호
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• pp.120-129
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• 2021

In this study, the effect of a telecommunication company's safety management system on workers' safety awareness and safety behavior was empirically verified. The main findings are as follows: First, among the factors of the telecommunication company's safety management system, the management supervisor's capability and level of industrial accident investigations were found to have a significant positive effect on workers' safety awareness. Second, workers' safety awareness was observed to exert a significant positive effect on their safety behavior. Third, among the factors of the telecommunication company's safety management system, the management supervisor's capability and industrial accident investigations were found to have a significant positive effect on the safety behavior of workers. Fourth, although the telecommunications safety management system factors, such as management supervisors' capability and industrial accident investigations, were found to have a positive effect on workers' safety awareness, they had no mediated effect on workers' safety behavior through safety awareness.

• Safety and Health at Work
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• 제9권4호
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• pp.421-426
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• 2018

Background: The purpose of this study was to investigate the effect of shift work on occupational safety in various industrial sectors. The study analyzes the effects of shift work on the health of workers by considering factors such as the workplace environment and welfare. Methods: Focusing on the $4^{th}$ Korean Working Conditions Survey, this study used an ordinary least-square multiple regression analysis. The dependent variable was the annual frequency of injuries reported by workers. Independent variables were categorized as demographic, shift work, workplace environment, and welfare variables. The analysis was conducted on two levels: 1) Shift work and nonshift work groups were compared, and 2) Shift work was compared with fixed and rotating shifts. Results: For the entire group, age, a low level of education, work hours, and daily and dispatch work negatively impacted the frequency of injuries. Shift work was negatively affected by workplace environment and welfare factors. In the shift group, the frequency of injuries was lower than that of regular workers, and the higher the autonomy in the choice of work hours, the lower the frequency of injuries. Furthermore, shift workers in Korea have more extended work hours (49.25 h/week) than other workers (46.34 h/week). Conclusion: Overall, welfare factors such as workplace satisfaction and worke-life balance reduced the frequency of injuries. The effect of shift work was limited, but it was confirmed that shift worker autonomy could reduce the frequency of injuries.

• Safety and Health at Work
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• 제7권1호
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• pp.43-48
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• 2016

Background: Work Ability Index (WAI) is a well-known and valid self-report tool that has been widely used in various studies to identify and avoid early retirement and work-related disability. Nevertheless, very few studies have been carried out to evaluate work ability in Iran. We aimed to investigate the WAI and the effect of work-related stress on it among Iranian workers. Methods: A cross-sectional, descriptive and analytic study was carried out among 449 workers from five working sectors in three big cities of Iran. Work ability and work-related stress were measured using the Persian version of WAI and the Persian version of Health and Safety Executive Stress Indicator Tool. Results: More than a third of the workers surveyed (34.70%) did not have an appropriate level of work ability (WAI < 37). There was a significant correlation between subscales of work-related stress and the mean score of WAI. Furthermore, the variables of body mass index, sleep quality, exercise activity, job tenure, and three subscales of work-related stress including demands, supervisor support, and role were significant predictors of WAI. Conclusion: According to the results of this study, the interventional programs must be focused on improving supervisors support, eliminating ambiguity and conflicts in the role of workers in their job and organization, reducing job demands, improving sleep quality, and increasing exercise activity.

• 한국소음진동공학회논문집
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• 제22권10호
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• pp.940-948
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• 2012

In Korea, researches on the exposure assessment of the hand-transmitted vibration started from the mid-90, however, they were performed in the limited industries such as auto-assembly plants and the evaluation of the vibration was mostly conducted by ISO 5349(1986). Therefore, it was necessary to assess hand-transmitted vibration levels of workplace such as ship building/repairing industry or mining industry where occupational injuries are largely occurred and to evaluate the vibration levels using revised ISO 5349(2001). The SVAN 948 Four Channels Sound & Vibration Analyser was used for the measurement. The workers using a chain saw were exposed to 1.7~2.8 $m/s^2$ of daily vibration level. Workers using a rock drill in a coal mining were exposed to the highest vibration acceleration among workers and the levels were 7.1~10.8 $m/s^2$. Vibration levels of grinders were different according to the types of grinders. The hand-transmitted vibration of 3 types of grinders were measured and the levels were 3.3~11.1 $m/s^2$. Workers using a impact wrench were exposed to 1.5~1.6 $m/s^2$ of vibration. Out of 20 kinds of machines, only 4 tools provided the information of vibration acceleration on the instructions. In addition, the current condition of workplace to control vibration was not much different from the past because there are no vibration exposure limit.