Purpose: The purpose of this study was to compare working condition and health status between parcel delivery workers (PDW) and food delivery workers (FDW) and to examine the factors influencing their health status. Methods: This was a secondary analysis of data collected from the fifth Korean Working Conditions Survey (KWCS). Based on existing literature, a set of variables was chosen from the KWCS. Results: The proportion of PDW who carryied/moved heavy loads and experienced high job stress and lack of rest time was significantly higher than that of FDW. However, more FDW than their counterparts worked atypical hours. The differences in fatigue and well-being between PDW and FDW were not statistically significant. The multiple logistic regression analysis revealed low temperature, tobacco smoke, standing for long periods, and job stress were significant predictors of fatigue or well-being of FDW. Among PDW, noise, tobacco smoke, sitting for long periods, quantitative demands, hiding emotions, support from colleagues, job stress, no recovery period, and night work were significant predictors of fatigue or well-being. Conclusion: The findings of this study may be useful in developing nursing interventions for disease protection health promotion of delivery workers.
Journal of Korean Society of Occupational and Environmental Hygiene
/
v.30
no.1
/
pp.1-9
/
2020
Objectives: The purpose of this case study is to assess workers' exposure to carbon nanotubes(CNTs) and characterize particles aerosolized during the process of producing CNT-enabled polytetrafuoroethylene(PTFE) composites at a worksite in Korea. Methods: Personal breathing zone and area samples were collected for determining respirable concentrations of elemental carbon(EC) using NIOSH(National Institute for Occupational Safety and Health) Method 5040. Personal exposure to nano-sized particles was measured as the number concentration and mean diameter using personal ultrafine particle monitors. The number concentration by particle size was measured using optical particle sizers(OPS) and scanning mobility particle sizers(SMPS). Transmission electron microscopy (TEM) area samples were collected on TEM grids and analyzed to characterize the size, morphology, and chemistry of the particles. Results: Respirable EC concentrations ranged from 0.04 to 0.24 ㎍/㎥, which were below 23% of the exposure limit recommended by NIOSH and lower than background concentrations. Number concentrations by particle size measured using OPS and SMPS were not noticeably elevated during CNT-PTFE composite work. Instant increase of number concentrations of nano-sized particles was observed during manual sanding of CNT-PTFE composites. Both number concentrations and mean diameters did not show a statistically significant difference between workers handing CNT-added and not-added materials. TEM analyses revealed the emission of free-standing CNTs and CNT-PTFE aggregate particles from the powder supply task and composite particles embedded with CNTs from the computer numerical control(CNC) machining task with more than tens of micrometers in diameter. No free-standing CNT particles were observed from the CNC machining task. Conclusions: Significant worker exposure to respirable CNTs was not found, but the aerosolization of CNTs and CNT-embedded composite particles were observed during handing of CNT-PTFE powders and CNC machining of CNT-PTFE composites. Considering the limited knowledge on the toxicity of CNTs and CNT composite particles to date, it seems prudent to take a precautionary approach for the protection of workers' health.
It is said the maritime labour law that total legislation system regulate all relationship concerning a labour of seafarers. A possibility of danger, a helplessness from the shore, a importance of the responsibility, a segregation from the public, etc. is mentioned as the particularity of a maritime labour which is distinguished from that of a shore labour. Therefore, the improvement of social standing and protection of rights for seafarers may be achieved substantially by the maritime labour standards considering such particularity of maritime labour. A vessel is itself international relationship, accordingly maritime labour is also same. It means that international relationship should be considered, whenever any country makes it's national law for maritime labour. Therefore, this paper aims to find out the spirit of legislation for the maritime labour law through a historical study on the development of it, and suggest the facts that should be considered for legislation of domestic law concerned.
In a TV component manufacturing factory, 102 male workers aged $20{\sim}39$ years old were participated in testing for physical fitness. At the same time, worker's periodic health examination was done. Test battery for physical fitness include grip strength, trunk flexion, standing long jump, side step, single leg balance with eye close, push ups and Harvard step test. As a result of testing for physical fitness, synthetically, there is no difference between manufacturing workers and officers. By bioelectrical impedance test, it means a declining tendency to all 7 factors in the obese workers, and so, it is important for obese workers not only to promote physical fitness but also to promote health. Excluding grip strength and single leg balance with eye close, 5 fitness factors are negatively associated with degree of diastolic Blood pressure, but it is statistically not significant. And levels of sGOT & sGPT have no association with physical fitness factors.
Kim, Young Sun;Kwon, Oh Jun;Kim, Ki Sik;Koo, Kwon Ho
Journal of Korean Society of Occupational and Environmental Hygiene
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v.22
no.2
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pp.107-118
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2012
Objectives: This study examines the occurrence of disease resulting from low back pain and factors of working environment meaningfully influencing the occurrence of lumbago as well as analyzes '2nd Korean Working Condition Survey (KWCS)' conducted in 2010 so as to establish the prevention and improvement measures. Methods: The analysis method is that it is to compare the prevalence rate of low back pain according to working environment via odds ratio and to implement the test about the factors having the difference in working environment between low back pain group and normal group through weighted t-test. Results: As a result, it indicates that there is a meaningful difference for prevalence rate of low back pain according to age, status in employment and education level which are socio-demographical factors. The analysis in working hours shows that the period of work is a factor raising the prevalence rate of low back pain rather than weekly working hours. The analysis in the work risk factor indicates that the increase in prevalence rate of low back pain takes place to either workers with repetitive movement and continuously standing posture or those with heavy stress and emotional labour. Conclusions: Workers with low back pain have suffered from accident, depression, anxiety disorder and sleep. The factors in which the prevalence rate of low back pain decrease are to provide information on health and safety and working speed, and enough rest.
The Journal of Korean Society for School & Community Health Education
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v.22
no.1
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pp.73-92
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2021
Objectives: The purposes of this study was to describe workers' perceived values and the affecting factors (pros and cons) of the experience education for occupational safety and health and to suggest the strategies and future directions to improve the experience educational quality. Methods: A total of 8 male workers taking the safety and health education of the 7 safety experience education centers involved in this study (5 centers managed by Korea Occupational Safety and Health Agency (KOSHA), 2 centers of large commercial companies). This study used Photovoice, a qualitative method, as the study method. We conducted the photovoice-based in-depth interview with the SHOWeD questions and strategy and used the taxonomical analysis. Results: The study participants' perceived values of experience education were strengthening self-efficacy of the safety and health practices, providing practically useful information, and enjoying refreshing experiences different from daily jobs. Positive affecting factors of the experience education (pros) were providing the educational environments and opportunities of direct experiences, teaching practical safety and health contents for the participants, and the trainer's instruction competencies. Negative affecting factors of the experience education (cons) were learner's negative or standing postures during trainer's lecturing, insufficient exercise conditions and facilities for education, and difficult and theory-oriented lecture far from the practical jobs in reality. Conclusions: Major values of exercise education were direct experiences, useful contents and interesting opportunities from the education participants' perspectives. To improve the exercise education quality, overall educational environments such as convenience facilities as well as exercise facilities should be modified altogether. This study partially and conveniently used the photovoice method as the study limitation.
Kim, Ki;Hong, Gun-Chul;Kwak, In-Suk;Park, Sun-Myung;Choi, Choon-Ki;Seok, Jae-Dong
The Korean Journal of Nuclear Medicine Technology
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v.14
no.2
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pp.41-44
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2010
Purpose: Along with recent advances in PET/CT instrumentation and imaging technology, the number of patients has also been steadily increasing. This resulted in the increased radiation exposure to radiation workers in PET/CT rooms. In this study, we installed a radiation shield and investigated whether it could reduce radiation exposure to the workers and thus enhance job satisfaction. Materials and Methods: A radiation shield is composed of 5 cm thick lead and has a structure in which a radiation worker sits and watches a patient through lead glass while injecting radiopharmaceutical to the patient. Quarterly absorbed dose of radiation workers was measured using thermoluminescence dosimeters (TLD) and the results were compared for six months each before and after installation of the radiation shield. Exposure dose was also measured using a pocket dosimeter placed at the same location in the front and the back of the radiation shield. In addition, frequency of use of the shield and job satisfaction of radiation workers were investigated using a survey. Results: Quarterly absorbed dose of radiation workers was 2.70 mSv on average before installation of new radiation shield, whereas that dropped to 2.13 mSv after installation of radiation shield, reducing radiation exposure dose by 21%. Exposure dose on the front side of the shield was 61.2 R, whereas that on the back side of shield was 2.8 R. According to the survey, 85% of workers used the shield and were satisfied with the outcome: each radiation worker made injections to patients average of 6.5 times/day and preferred sitting to standing while injecting radiopharmaceutical to patients. Conclusion: Use of radiation shield reduced the exposure dose of radiation workers, which is the ultimate goal of radiation protection to minimize radiation exposure and is an appropriate method for the improvement of hospital working environment. Furthermore, we found that use of radiation shield not only relieves physical and psychological burden of radiation workers but also enhances job satisfaction. This result indicates that use of radiation shield is important for improvement of the radiation workers' job environment in terms of radiation protection.
Purpose: The purpose of this study is to identify the trends of studies on work-related musculoskeletal disorder and to suggest the direction of future research. Method: 144 research thesis for a degree on work-related musculoskeletal disorder were systematic reviewed and published from Jan. 1990 to Mar. 2005. The analyzed using descriptive statistics, an actual number, percentage. Result: As its result the work-related musculoskeletal disorder research which is announced from domestic the doctorate dissertation at the 2004 year 42 the most many 144 dissertation middle most to be 129 in master degree dissertation was 15 in Ph D degree. Dissertation contents character the contents against the result relation that it analyzes especially and a condition and an obstacle was many most at 84. Research plan in most description investigation research 121 the dissertation field to be the especially public health (hygiene, industry and environment) at this 57 most many research object person distribution manufacturing industry in the research object one dissertation was many most at the 40. The tools which are used in each measurement in the question tool which it uses most the question price of land which uses the condition investigation ticket which it made from the NIOSH and the ANSI most many 33, the hazard which analyzes a work attitude in the tool which it uses the RULA was many most at 14. In the stress test tool social psychological healthy measurement PWI (Psychological Wellbeing Index) the dissertation which uses the Job Strain of the Karasek Model to be many most at 19 PWI (Psychological Wellbeing Index) 7 easy use. Work-related musculoskeletal disorder measurement hazard in physiological index and the machinery and tools which it uses there were 9 researches to use an electromyogram most plentifully. With the effect goes to a work-related musculoskeletal disorder they are 33 where the age is many most from general quality. From healthy act with the relation of smoking the year to be many from 16 dissertations. Work of the corpse an attitude (the attitude which is inappropriate) with 5 and the work market the work burglar is many most at 9, the society-support of 36 where the stress is many psychologically most, the stress and service also the most many duty discretion (authority and autonomy) is 6 at the duty demand boat song 9. The service career to be many is 22 of extraordinarily with relation of service. Conclusion: It is recommended the research which it sees being limited in only domestic thesis for a degree the international comparative study to become accomplished. It comes to think with the fact that it will be necessary to make the protocol which it conforms in the civil official guide the test researches for the protocol or arbitration program which is standardized are necessary. Prevention and the civil official of work relation bones and sinews standing total disease hazard scientific base one program is necessary with base.
Much of the working population in developing countries are engaged in shift work now and the number of shift workers is not expected to decrease in the future mostly because the need for continuity of production is increasing. Therefore, the possible effects of shift work on health are of particular interest, and in fact, there have been many epidemiological studies on shift work since the first world war. However, no studies on health effects of shift work have been reported in Korea, and the existing studies in western world have arrived at quite different conclusions mainly because the conditions of work other than shift work, such as age and selection of workers, work environment, and labor conditions also influence the health of workers. This study was firstly carried out in Korea to investigate the health risks related to shift work with 2,093 female workers randomly selected from three major manufacturing industries in proportion to total number of female workers in those industries. Differences of work conditions other than shift work in this study were adjusted by multivariate analysis. Ma findings obtained from this study are as follows : 1. There were significant differences between shift and day workers in the distribution of age, type of industry, condition of noise and dust, regularity of mealtime, working position, and working duration. Shift workers tended to be younger, to have shorter working duration, to have more irregular mealtime, to work in standing position, and to work under more noisy and dusty environment than day workers. 2. Univariate analysis showed that shift work increased the Todai Health Index (THI) scores of digestive tract, respiratory tract, and mental instability symptom categories. Shift work also increased days of sickness absence and number of industrial accident per 100 workers per month. 3. Multivariate analysis that adjusted the differences of demographic, occupational and non-occupational health-related working conditions showed that digestive tract symptom and mental instability symptom scores were significantly higher in shift workers than those in day workers. Based on these study results, it is concluded that the shift work has significant effects on some psychophysiological conditions of the workers and the effects are also influenced by several other personal and working conditions.
The purpose of this study was to provide the basic data for the effective health management of the industrial workers, by classifying factors influencing their perceived symptoms to examine their health status and identifying the inter' relationship of their perceived symptom with their working department. the environment of working area and their general characteristics. The study was undertaken from October 1 to November 30. 1989. The subjects were 999 workers who had worked in Industrial Corps located in Chungbuk Province. The results of this study were as follows: I . Worker's perceived symptoms were classified according to the following eight factors; 1) musculo - skeletal symptoms of shoulder, neck, back and arm 2) optical symptoms 3) symptoms in head(such as headache and dull) 4) musculo - skeletal symptoms of leg and lower back 5) gastro - intestinal symptoms 6) mental symptoms. 7) neural symptoms 8) lung and heart symptoms II . The degrees of workers' perception of perceived symptoms; Mean score of perceived symptoms:7.0 The rank of degrees of perceived symptoms: The highest:musculo - skeletal symptoms of shoulder, neck, back, and arm The second:optical symptoms The third:musculo - skeletal symptoms of leg and lower back The fourth:mental symptoms the fifth:gastro-intestinal symptoms m . Analysis of the inter-relationship of perceived symptoms with working department, environment of working area and general characteristics; 1) sexuality The difference of degrees of perceived symptoms was significant;femanle was higher than male(P<0.000). 2) level of education The difference of degrees of perceived symptoms according to the level of education was significant; The higher the level of education, the higher the degree. 3) working department The working department played a significant part in the degrees of perceived symptoms of workers; Workers of assembling department:musculo-skeletal symptoms both of shoulder. neck, back and arm and of leg and lower back(P<0.000). Workers of inspection department:optical symptoms(P<0.05). Office workers:mental symptoms(P<0.05). 4) kinds of job The difference of the degrees of perceived symptoms according to kinds of job was significant; Workers dealing with chemical materials and workers dealing with job with high tension:gastro-intestinal symptoms and symptoms in head. Workers dealing with weighty things or working a long time with the same posture:musculo-skeletal symptoms both of shoulder, neck, back and arm and of lower back(P<0.000). 5) working posture The difference of the degrees of perceived symptoms related with working posture was significant; Sitting:optical symptoms(P<0.0000) and symptoms in head(P<0.005) Standing:musculo-skeletal symptoms of leg and lower back(P<0.0000). 6) satisfaction with their own duty The more dissatisfien they were. the higher became the degrees of their perceived symptoms(P<0.0001). 7) satisfaction with their working condition The more dissatisfied with their working condition they were, the higher became the degrees of their perceived symptoms(P<0.001). 8) environment of working area The environment of working area played a significant part in the degrees of perceived symptoms of workers; Workers exposed to most of the factors of the environment of working area were higher than those not exposed in the degrees of musculoskeletal symptoms. Workers in the noisy environment:optican symptoms(P<0.000), symptoms in head(P<0.005). Workers in the damp environment:optical symptoms(P<0.005) and lung and heart symptoms(P <0.01). Workers with illumination problem:optical symptoms(P<0.000), mental symptoms(P<0.005) and neural symptoms(P<0.01). Workers with ventilation problem:optical symptoms and lung and heart symptoms(P<0.001)
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