• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.28 no.4
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• pp.365-373
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• 2018

Objective: This study aims to analyze the relationship between employment status and the prevalence of chronic obstructive pulmonary disease (COPD) for manufacturing and construction workers. Methods: Subjects, who had or have worked as temporary workers in manufacturing or construction worksites for the longest career years, were extracted from the KNHANES(2007-2009) database. Characteristics of demographical, socio-economic, and smoking history were treated as independent variables. Considering that smoking experience and age are significantly influential in the prevalence of COPD, logistic regressions were analyzed after stratifying subjects according to their smoking experience and age. A two-stage stratified systematic sampling method was applied for the logistic regression analysis. Results: Age, gender, and household income level were associated with the prevalence of COPD in both smoking and non-smoking groups. However, employment status was only significant among smoking group. Smoking experience and age were significantly related to the prevalence of COPD among all age groups. In addition, employment status and household income level were also associated with the prevalence of COPD in young aged group. But gender was the only significant factor among the elder group. Conclusions: This study confirmed that employment status was a major social factor which may be related to the prevalence of COPD. Proper supports such as providing safety measures should be provided to temporary workers to manage their respiratory health.

• Asia-Pacific Journal of Business
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• v.10 no.4
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• pp.137-151
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• 2019

Using Korean Labor and Income Panel Study data, this paper estimates nominal wage rigidity in Korea by industry from 2005 to 2017 and evaluates the level of inefficiency of Korean labor market. And, after estimating employment volatility by industry using the Labor Force Survey at Establishments data for Korea, we combine the nominal wage rigidity and the employment volatility estimates and analyze the effect of nominal wage rigidity on employment volatility in Korea from 2011 to 2017. If the level of wage rigidity is high, it may be hard for the labor market to be in the equilibrium, and therefore, the market may have inefficiency. We find that the inefficiency of the labor market in Korea have increased from 2005 to 2017 and the industry of accommodation and food service activities has the highest level of inefficiency over the period. We also find that one-percent-point increase in wage rigidity increases employment volatility by 2.3-2.9 percent and the positive effect is bigger for workers with part-time and temporary jobs. The result implies that firms may adjust their labor costs by changing the number of casual workers, rather than permanent workers, when the labor market suffers from a high level of wage rigidity.

• Journal of Korean society of Dental Hygiene
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• v.13 no.6
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• pp.1005-1014
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• 2013

Objectives : The purpose of the study is to obtain the basic data for an industrial oral health project enhancing the quality of life and oral health. Methods : Questionnaire consisted of 17 questions including 7 questions of general characteristics, 5 questions of oral health awareness, and 5 questions of the behavior of oral health. A self-reported questionnaire was carried out from September 1 to September 28, 2012, The subjects were 400 male and female sanitation workers in private corporations in Jeonju. A total of 354 questionnaires were analyzed using SPSS windows ver. 12.0 (SPSS Inc. Korea). Results : The majority of the subjects were male in 50's. Temporary contract workers are older aged and 2 to 5 years of career workers were the majority of the cleaners. Average monthly income was less than 2 million Korean Won. Those who had a higher academic background and permanent position tended to have oral health knowledge (p<0.05). Female workers had healthier subjective oral health status than male workers. Those who were in older age, single, temporary position, and 2 to 5 years of career tended to have healthier subjective oral health status (p<0.05). Those who were in older age, married, and long period of employment were worrying about their health (p<0.05). The subjective oral health knowledge was high in 49.7% of the workers because they were not able to brush teeth during work hours. They were able to brush their teeth only after dinner. It was low in female and older aged workers (p<0.05). The brushing method included a combination of top to bottom and from the side to side. Conclusions : This study showed the influencing factor of oral health in street workers. Work environment, education, age, monthly income, and types of employment were the important factors to oral health care. It is necessary to provide the right oral health care program for the workers in the near future.

• Journal of the Ergonomics Society of Korea
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• v.29 no.5
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• pp.751-762
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• 2010

The purpose of this study was to investigate the job stress factors of aircraft composite material part manufacturing workers using survey based on 'Job stress factors evaluation tool for Koreans' that was developed by KOSHA in 2003. Two hundred and fifty workers participated in this study, and among them 204 responses were analyzed for this study due to the unreliability and insincerity of responses. The eight job stress factors which are physical environment, job autonomy, job insecurity, organizational system, workplace culture, unfair compensation, relationship conflict, and job requirement were analyzed. The results showed that the stress level of the six job stress factors which are physical environment, job autonomy, job insecurity, organizational system, workplace culture, unfair compensation was relatively higher than that of other industry workers. Generally, all eight job stress factors showed higher stress with temporary workers than with permanent workers, and especially job autonomy, job insecurity, organizational system, and unfair compensation factors showed statistically significant differences (p<0.05). Since the temporary workers are insecure with their job, weak position in organization, having little self-control for the job and lower pay level than that of permanent workers though the job is as same as permanent workers', the stress level of above job stress factors would be much higher than that of the other factors. The group of unsatisfactory with workplace showed higher job stress than group of satisfactory with workplace in all job stress factors, as expected, at the statistically significance level (p<0.05). From the results of this study, the work loss due to the job stress could be prevented, and accurate stress factors could be removed at the workplace. Also the job stress management program can be implemented to improve the work efficiency and the workers' quality of life.

• Nuclear Engineering and Technology
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• v.44 no.5
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• pp.507-522
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• 2012

When decommissioning a nuclear power plant, it is difficult to make an appropriate plan to ensure sufficient space for temporary placement and conveyance operations of dismantling targets. This paper describes a system to support temporary placement and conveyance operations using augmented reality (AR). The system employs a laser range scanner to measure the three-dimensional (3D) information of the environment and a dismantling target to produce 3D surface polygon models. Then, the operator simulates temporary placement and conveyance operations using the system by manipulating the obtained 3D model of the dismantling target in the work field. Referring to the obtained 3D model of the environment, a possible collision between the dismantling target and the environment is detectable. Using AR, the collision position is presented intuitively. After field workers evaluated this system, the authors concluded that the system is feasible and acceptable to verify whether spaces for passage and temporary storage are sufficient for temporary placement and conveyance operations. For practical use in the future, some new functions must be added to improve the system. For example, it must be possible for multiple workers to use the system simultaneously by sharing the view of dismantling work.

• Journal of Labour Economics
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• v.24 no.2
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• pp.95-123
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• 2001

One of the most pronounced phenomenon among the changes in the 1990s' Korean labor market is the growth of the share of temporary and daily workers. Yet, it is still not clear exactly how the phenomenon should be interpreted. In order to look into the phenomenon, the paper introduces various definitions of employment status based upon multi-dimensional classification criteria and estimates their sizes using the EAPS Supplemental Survey of August 2000 by the National Statistical Office of Korea. According to the data set, the share of temporary employment by the OECD standards is 17.6% which is higher than most European countries but not far away from them unlike some popular claims. Further, it is shown that the high proportion of temporary and daily workers among the employees, currently above 50%, is possibly due not only to the increased employment instability but also to the widened differentiation among workers in terms of fringe benefits such as the retirement pay and social insurances.

• Korean Journal of Labor Studies
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• v.17 no.1
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• pp.243-267
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• 2011

This paper explores the impact of the external workers on employment performance in Korea, using Workplace Panel Survey (WPS). I find the use of external workers, e.g., temporary agency workers, in-subcontract workers, and contract workers, is mainly negatively related with employment performance. Especially the use of in-subcontract workers and contract workers is negatively related with the job creation rate of standard workers and the net growth rate of internal workers. The results show the existence of a substitute effect between the use of internal and external workers.

• The Journal of the Convergence on Culture Technology
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• v.7 no.4
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• pp.765-778
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• 2021

The purpose of this study is to prevent fire accidents in advance by deriving prior knowledge among groups about temporary fire-fighting facilities of workers at construction sites and devising appropriate improvement measures. The findings are as follows.First, in the case of fire extinguishers, statistical attention was paid to the contractor, supervisor, partner worker and fire extinguisher manager between designations. 87% of fire managers and 70% of facility supervisors said fire extinguisher management managers needed to be designated for each type of construction, which requires designation of fire extinguisher management managers, frequently checking and relocating. Second, in the case of simple fire extinguishing facilities, statistical attention was paid to the application of penalties for unauthorized use of fire extinguishing facilities with construction companies, supervisors, and business partners.Third, in the case of emergency alarm measures, statistical attention was paid to the application of emergency alarm sound to temporary broadcasting facilities with construction works, supervisors, and business partners.Fourth, in the case of induction, statistical attention was paid to the application of connection between construction works, supervisors, and partner workers, such as passage guidance, emergency lighting, etc.It was found that 65% of construction workers and 55% of electrical workers had different applications such as aisle guidance and emergency lighting for each type of business partner. In order to resolve blind spots such as evacuation zone guidance due to the structure of the building, it is necessary to easily distinguish the direction of the entrance door from a long distance by applying it in conjunction with passage guidance lights and emergency lighting.

• Journal of Korea Port Economic Association
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• v.35 no.2
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• pp.37-60
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• 2019

An analysis of the correlation in port-related industries between minimum wage and employment effects, showed that it was very insignificant. However, there are some differences between commercial and temporary workers, those that are self-employed, and other workers in the private sector. Thus, while commercial workers are somewhat stable, they have a somewhat negative effect on temporary workers and self-employed people. At the Minimum Wage Council, the minimum wage hike is seen as stable because of the interaction between income and substitution effects in the labor market. According to the analysis, the port-related industries were affected more by the global economic recession and domestic economic volatility than the variables related to the minimum wage hike.

• Journal of Science and Technology Studies
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• v.16 no.1
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• pp.29-61
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• 2016

This paper explains the one of the most problematic factor in the society that leads to social inequality - increase in non-regular work. Theoretically, this expansion of non-regular work can be explained by technologies that are designed to save the labor force, especially since corporations in Korea have strategies to replace the regular workers with temporary workers, to save money. OECD also noted that Korea's income inequality is pretty high in ranking when compared with the rest of the OECD members, and says that globalization and technological innovation are the factors of this problem. To refine the argument, this study also looks at relationship between development made in sciences - which can be stated as a proxy variable to look at the advances made in technology - and expansion of temporary work force by using VAR methodology. Based on the results of this analysis in the future temporary/regular workers ratio started with decline, then turn to rise. These temporary/regular workers ratio sustained growth prediction shows that the expansion of the temporary expansion contributes to instability and social inequality in the labor market and technological change are interrelated.