Executive safety leadership is essential to prevent accidents in the workplace. However, will safety be secured by emphasizing only executive safety leadership to workers? In this study, the impact of executive safety leadership on the workplace hazard level was analyzed by adding the supervisor's safety role as a mediating variable. This paper shows that executive safety leadership has no direct effect on workplace hazard levels. However, executive safety leadership was found to have a significant impact on the supervisor safety role, and the supervisor safety role was found to lower the hazard levels in the workplace. In summary, executive safety leadership was found to reduce the hazard levels in the workplace through the full mediating effect of the supervisor safety role. Based on these research results, this study seeks to present the following recommendations to the government and management: The government should ensure that a workplace safety and health system is established by strengthening the effects of other mediating factors, such as strengthening the role of supervisors who are actually responsible for workplace safety and health. Executives must grant supervisors actual authority and responsibility to properly perform their safety roles and establish personnel and performance evaluation systems.

As the importance of artificial intelligence grows rapidly and emerges as a leader in technology, it is becoming an important variable in the next-generation industrial system along with the robot industry. In this study, a safety system was developed using deep learning technology to provide worker safety in a robot workplace environment. The implemented safety system has multiple cameras installed with various viewing directions to avoid blind spots caused by interference. Workers in various scenario situations were detected, and appropriate robot response scenarios were implemented according to the worker's risk level through IO communication. For human detection, the YOLO algorithm, which is widely used in object detection, was used, and a separate robot class was added and learned to compensate for the problem of misrecognizing the robot as a human. The performance of the implemented system was evaluated by operator detection performance by applying various operator scenarios, and it was confirmed that the safety system operated stably.

Rack is a place to store products. Workers pick products from rack storage. After picking up, workers move to another location by forklift. Driving speed, worker condition, and number/frequency of operation is responsible for forklift accidents. When an accident occurs, products get damaged. Therefore, it is important to prevent one. As the research result, To prevent forklift accidents, the minimum order quantity, the minimum number of operations, and low speed operation are required.

복숭아는 대표적인 여름 과일이자 알레르기를 유발하는 식품으로 밀폐되고 집약적인 생산환경으로 인해 시설 내 유기분 진, 농약, 복숭아털이 발생하기 때문에, 열악한 작업환경으로 인한 작업자들이 어려움을 많이 겪고 있다. 본 연구에서는 복 숭아 선별작업장에서 발생하는 미세먼지를 위치별, 작업별, 입경별로 모니터링함으로써 저감 및 대책 마련을 위한 기초자 료를 확보하고자 하였다. 미세먼지 모니터링 결과 지역별로 는 선별과정에서 미세먼지의 발생이 높은 것으로 나타났으며, 주로 기계적인 과정을 통하여 발생하는 10μm 이상의 미세먼 지로 나타났다. 본 연구를 바탕으로 향후 작업환경의 개선을 위해서 공정 중 미세먼지가 주로 발생하는 지역 및 미세먼지 의 물리적 특성을 고려하여 저감시설 및 개인보호구의 착용이 요구된다.

본 연구는 인천광역시의 직업재활시설(보호작업장)을 중심으로 근로자의 소진을 유발 하는 외부요인을 살펴본다. 그리고 직업재활시설 종사자에 대한 법적 기준 준수와 개선 방법 등 지방자치단체가 지원할 수 있는 종사자 처우 개선 방안을 제시하였다. 직업재활 시설은 복지시설로서 중증장애인에 대한 복지시설로서의 업무성격과 생산 및 판매활동 등 수익사업으로 중증장애인들에게 급여를 지급하는 기업의 성격도 함께 지니고 있어 종사자들에게는 다른 유형의 복지시설보다 업무 부담이 크다. 시설의 생산성이 높을수록 다른 사회복지시설에 비해 업무량이 많아짐에도 불구하고, 종사자 수가 법적 배치기준보 다 적을 때는 소진이 빠르게 진행된다. 초과근무에도 보상이나 처우가 부족한 상황에서 는 종사자들에게 불만과 소진요인이 된다. 따라서 지방자치단체에서 직업재활시설 종사 자의 소진 및 이직을 방지하기 법적 배치기준에 따라 종사자를 지원하고 종사자 처우를 개선할 수 있는 방안들을 본 논문에서 제안하고자 한다

In advanced countries, various policies are being enforced to reduce equipment noise level at it’s source. This paper analyses the problems of domestic noise policies related to noisy equipment, and presents a plan for improving the implementation of expansion policy of low noise equipment based on this analysis. This paper proposes that the equipment satisfying the compulsory rule be able to use the environmental certification mark, the standards of which are defined in recommended rules, to improve the linkage between the two policy measures. This paper also suggests expanding the range of equipment to be supervised and using new noise label that has grades and shows detailed noise level of the equipment to improve environmental certification system. In addition, supplementing the construction permission system and supporting international certification system are offered to expand the use of low noise equipment.

The principal hygienic problem caused by livestock industry is the odor exposed to farm workers. This study was performed to assess air cleaner efficiency for reducing odor through on-site evaluation. The concentration of ammonia and hydrogen sulfide, which are major odorous compounds generated from livestock building, were monitored by realtime direct recorder. The odor mixture was measured by air dilution method applying human noses of five panels. Their reduction efficiencies were represented by difference between initial concentration exhausted by non-treatment and concentration measured after treatment of respective control mechanism (water, germicide and plasma ion) of air cleaner. Mean levels of ammonia and hydrogen sulfide were 1.84 (SD:0.22) ppm and 76.83 (SD:1.37) ppb for non-treatment, 1.23 (SD:0.09) ppm and 59.07 (SD:2.68) ppb for wet scrubber (water), 1.08 (SD:0.03) ppm and 58.55 (SD:1.62) ppb for wet scrubber (germicide), and 0.96 (SD:0.03) ppm and 53.66 (SD:1.37) ppb for plasma ion, respectively. Mean dilution factors of odor mixture were 100 for non-treatment, 66.9 for wet scrubber (water), 144.2 for wet scrubber (germicide), and 66.94 for plasma ion, respectively. Based on the results obtained from on-site evaluation, ammonia and hydrogen sulfide showed the mean reduction efficiency of 40% and 25.7% compared with non-treatment process of air cleaner, respectively. In the case of odor mixture, the highest dilution factor was observed at wet scrubber (germicide) compared with other control mechanism of air cleaner.

본 연구는 유통서비스 업종에서의 작업장혁신과 관련하여 저원가 경쟁전략과 차별화 경쟁전략이 어떻게 나타나는지 살펴보고, 나아가 유통서비스 업체에서 고성과작업체계의 지향성을 갖는 작업장혁신 모델의 적용가능성을 탐색하고자 한다. 이를 위해 본 연구에서는 질적 사례분석과 양적 통계분석을 평행하는 통합적 연구(triangulation)를 시도하였다. 질적 사례분석에서는 미국의 대표적인 유통업체 중에서 저원가경쟁전략을 강조하는 월마트와 차별화 경쟁전략을 강조하는 웨그먼스를 추출하여 다수사례 연구방법(multi-case study)을 적용하였다. 양적 통계분석에서는 유통서비스 업종에 속한 100인 이상 한국 기업체를 모집단으로 하여 245개의 기업을 표본추출하여 고성과작업체계의 실태에 대한 설문조사와 통계분석을 하였다. 연구결과, 질적 분석의 경우 월마트는 저원가 경쟁전략을, 웨그먼스는 차별화 경쟁전략을 중심으로 하고 있었으며 이로 인해 서로 상이한 작업장체계를 구축하고 있었다. 월마트는 저비용-저가격 전략과 프로세스 주도적 혁신을 통해 엄청난 성장을 거두었지만, 그 성공 뒤에는 저임금, 저숙련, 단순노동, 높은 이직률로 얼룩진 열악한 일자리가 지배적이었다. 반면 웨그먼스는 차별화 경쟁전략과 고성과작업체계를 통해 양호한 경영성과와 양질의 일자리라는 두 마리 토끼를 함께 잡고 있었다. 한편 양적 분석의 경우, 한국의 유통서비스업체에서도 차별화 경쟁전략과 고성과작업체계의 구성요소간의 외적 적합성이 나타나 고 있었으며 나아가 고성과작업체계는 이직율을 부분적으로 매개하여 인당 매출액에 정(+)의 영향을 미치고 있었다.

This study was planned to investigate the effect of the exposure to hazard factors on work environment satisfaction. Existing researches about job satisfaction have focused on the general working conditions, such as working hours, wage, human relationship, job task and so on. Korean Working Conditions Survey was used for this study because that relevant questions were included. The effect of the exposure to hazard factors on work environment satisfaction may be produced by hierarchical regression analysis because of comparison with existing model for work environment satisfaction. The exposure to hazards factors were statistically significant effect on work environment satisfaction after adjusting other confounding variables, such as gender, age, educational level, job security, work hour, work load, work autonomy, social support, etc. This study has some limitation because that KWCS was cross sectional survey. Some researches about the causal effect and its mechanism may be suggested as future study.

This study was conducted to evaluate the health risk of workers exposed to phenyl glycidyl ether to prevent themfrom developing occupational diseases. The workplaces that coat floor with epoxy were selected and the sampleswere collected and analyzed with NIOSH 1619 Method. Unit risk was calculated according to the animalcarcinogenicity study. Excess cancer risk was also calculated by multiplying unit risk by exposure concentration.Monte Carlo simulation was performed to calculate the median, cumulative 90%, and cumulative 95% value.Phenyl glycidyl ether is a skin, eye irritator and can result in allergic reaction, nausea, intoxication. Unit risk wascalculated as 0.04 (mg/m³)-¹ based on the tumor incidence in rats. Geometric mean and geometric standarddeviation was also calculated as 0.112 ppm and 0.223, respectively by the workplace environment measurements.The median, cumulative 90%, and cumulative 95% value of excess cancer risk were calculated as 0.0244, 0.1328,0.1596, respectively. Not only cumulative 90% and cumulative 95% value but also the median of excess cancerrisk is much higher than 1×10-⁴ by the risk characterization, so there is a possibility of carcinogenesis to workers.Therefore, supervisors or managers of each workplace have to keep doing the risk management of their workplacesfor workers to reduce exposure to phenyl glycidyl ether.

본 연구의 목적은 고성과작업체계론을 통해 한국 기업의 작업장혁신 실태를 파악하고 나아가 작업장 혁신이 기업성과에 미치는 영향관계 그리고 이 관계에 대한 노사협의회 활성화 정도의 조절효과를 실증하는 것이다. 이를 위해 본 연구는 선행연구에 기반하여 고성과작업체계 및 노사협의회의 실태를 파악하기 위한 연구모형을 설계하고 1,180개 한국 기업에 대해 설문조사를 실시하였다. 분석결과는 다음과 같다. 우선 한국 기업의 고성과작업체계 수준은 240점 만점에 11

Recently, media coverages of the asbestos were gradually increased. In fact, serious problems have been found in asbestos removal. This study was performed against 375 workers from 30 asbestos removal firms from August 7 to December 10, 2010 in order to find out work conditions for asbestos removal. Then, the following results were obtained:
In terms of area, Seoul/Gyeonggi was the highest with 218 workers (58.1%). In terms of age, '41-50' was the highest among 140 workers (37.3%). The mean age was 50.3. When asked if they smoke cigarette, 272 respondents (72.5%) said 'YES.' When asked how many cigarettes they smoke a day, 11-20 (190 workers, 73.2%) was the highest, followed by 10 or less (43, 15.8%) and 'a pack or more (30, 11.0%).' In terms of average off-days per year, '1 month or less (257 workers, 68.5%)' was the highest, followed by '1-3 month(s) (77 workers, 20.5%)' and '3 months or more (41 workers, 10.9%).' In terms of annual income, 'KRW 10-20 million' was the highest with 162 workers (43.2%). No one was able to earn more than KRW 50 million. In terms of the workers' knowledge of the danger of asbestos, when asked if they were aware that asbestos can cause lung cancer, 348 respondents (92.8%) answered 'YES' while 7 workers (1.9%) said 'I am Not Sure.' According to multi-response analysis on protective clothing and gear, 369 respondents (98.9%) put on 'dust respirator' while 364 workers (97.6%) wore 'helmet.' In addition, 220 respondents (59.0%) answered that they wore 'protective clothing.' When asked how the protective clothing and gear were handled after use, 'seal them up in a designated bag and have them disposed of properly' was the response that has the highest percentage (360 respondents, 96.0%). The questionnaire consisted of 13 questions. Cronbach's alpha, which was performed to assess the reliability of the survey, was 0.858.

Depending on changes in industrial structure, industrial accident preventive measures have been developed in various forms. The focus for prevention of industrial accidents had been changed from part of the hardware to behavior and consciousness of workers. According to the change of focus, Korea's industrial accident preventive measures also has been adjusted to voluntary safety and health considering the safety culture and such attempts of preventive measures has contributed for reducing the accident rate. Safety culture is difficult to access due to the fact that factors that make up the safety culture are comprehensive and varied and there are many of external factors that affect to the safety culture. Moreover, there is a limit for applying specific preventive measures. Because, management culture or value of enterprises is various depending on each country or region. Nevertheless, looking at previous studies of advanced countries, they are presenting the fact that safety leadership has greater influence to formation of the safety culture. As a result, we study the Influence of manager's safety leadership that effect on safety culture. we want to propose the way to activate safety culture in workplace and to contribute for safety culture research.

This study was performed for the application of the exposure limit in work field and the relative noxious gas concentration was estimated by using a miniature ship. The noxious gas concentration about light and shade number distribution of measuring subject field was estimated by using floating visualization image from a miniature ship in a large wind tunnel. About the concentration estimation, the correlation of concentration distribution drawn from the existing experimental results was used, the estimation result satisfied LTEL standard.