• Journal of Applied Reliability
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• v.15 no.3
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• pp.181-191
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• 2015

Change in labor time is affecting occupational safety and health. Recently reduction in labor time brought innovational operation method, investment in plant and equipment, and flexible labor time in some companies, thereby affecting working conditions for labourers. However, working conditions for some vulnerable social groups have deteriorated. As a result, they are becoming more exposed to risk factors such as injury and emotional stress. In this study we use 2014 KWCS data in order to find the social and demographic characteristics in Korean working conditions. To this end, we use exploratory data analysis approach to find the relationship between some of the important variables in the KWCS data. We also use Press-State-Response model to find which group of people are vulnerable to Press and State. We find that women, people over age 50 and business owners are more vulnerable to Press and State than men, people below age 50 and wage workers.

• Journal of the Korean Society of Food Culture
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• v.25 no.1
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• pp.17-24
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• 2010

The purpose of this study was to investigate nutritional knowledge, practice of eating behavior guidelines, and problematic dietary habits in working high school students in comparison with non-working high school students. A survey questionnaire was formulated to obtain information on demographic variables, body size, part-time jobs, nutritional knowledge, practice of eating behavior guidelines, and dietary habits. The developed questionnaire was given out to 515 students attending a vocational high school in Yongin, Gyeonggi-Do. Those who had been working 5 hours or more per day for at least a month at the time of survey administration were defined as working students for this study. Proportions of working students were similar between male and female students (i.e. 49.5% for male, 50.5% for female). No significant difference was found in scores of nutritional knowledge between working ($8.43{\pm}2.29$) and non-working students ($8.60{\pm}2.19$). However, some dietary habits were found to be dependent on working status. While approximately 43% of non-working students reported skipping a meal, about 57% of working students did so (p<0.01). The proportion of students with any drinking experience was significantly higher among working students (92%) compared to non-working students (80%) (p<0.001). Working students were found to drink alcoholic beverages more often than non-working students (p<0.001). The mean score of practice of eating behavior guidelines was lower in working students than non-working students. The magnitude of this difference was modest ($51.33{\pm}0.63$ in working students, $53.40{\pm}0.51$ in non-working students), but reached statistical significance (p<0.01). Based on the findings from this study, it is suggested that specific behavior-oriented messages to improve certain problematic dietary habits need to be directed toward working high school students.

• Journal of Family Resource Management and Policy Review
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• v.18 no.4
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• pp.1-26
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• 2014

This study analyzes the effects of the three types of flexible work arrangements (part-time, flexitime, and reduced working hours for childcare) available in Korea on work-family conflict, facilitation, and job satisfaction for married working women ages 15-49. The study employs a panel analysis based on the first to the fourth data from the Korean Longitudinal Survey of Women & Families (KLoWF). The major results are as follows. First, the availability of part-time jobs and reduced working hours to facilitate childcare is significantly related to work-family conflict for married women. If a married woman is employed in a part-time position or if reduced working hours for childcare are available, the conflict within the family caused by the job is reduced. Second, none of the three types of flexible work arrangements have a statistically significant influence on work-family facilitation for married women. Third, the availability of reduced working hours for childcare has a positive effect on the job satisfaction of married women. In conclusion, flexible working hours for women who are raising children are the main factor in reducing the negative effect of a job on a woman's family life as they contribute to work and family compatibility.

• Journal of Technologic Dentistry
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• v.15 no.1
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• pp.27-41
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• 1993

Degree of noise by personal dental laboratory working process and degree of noise by complex dental laboratory working process were measured separtely. The time of exposure to noise greater than 70dB was analyzed. Then, the whole degree of noise in dental laboratory was estimated on the basis of afore-mentioned information. Questionaire were employed to investigate the mental, emotional and physiological effects of noise in dental technicians, The purpose of this study was to provide basic information on keeping dental techneicans who are exposed to noise pollution in good working condition and good health. Results obtained are as follows ; 1. Polishing process in each working part showed high degree of noise greater than 70dB in terms of degree of noise by personal working. 2. Degree of noise by complex working process in each working part was greater than that of personal working process. 3. Time of exposure to noise complex working process the part of porcelain 150min, partial denture 120 min, crown and bridge 100 min, full denture 80 min. 4. Degree of noise by time in dental laboratory was 80dB in general for polishing process and below 75dB for waxing process. 5. Effects of noise on mental and emotional state of dental technicians showed that they felt irritated every day(14%), irritated once in a while(29%) and easily ger mad(19%). 6. Effects of noise on heart and stomach were hyper-gastric acid(38%), gastric ulcer(11%), gastritis(5%), deuodenal ulcer(3%) and weak heart function(32%). 7. Effects of noise in the hearing ability were weak(39%), moderate(33%) and normal(14%) Data presented in this study demonstrated that noise in the dental laboratory exerts profound effect on dental technicians mentally, physiologically and emotionally, in light of the above results, therefore, it appears advisable to devots substantial on the management of working condition and put further(continuing) efforts in the investigation for reducing noise problem.

• Journal of Korean Society of Forest Science
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• v.87 no.1
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• pp.82-89
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• 1998

This study was carried out to investigate working time, performance, and to predict performance that related to the factor of forest road in earth work using excavator. It was found that the real working time was 503 minutes in a day. The ratio of real working time and allowance per total working time was approximately 85.7% and 14.3% individually. The rate of soil movement(Sm) to net working time was 38.6%, and earth cutting(Ec) was 32.5%. According to performance analysis, performance of earth work using excavator($0.8m^3$) in straight part was 1.4 times larger than curve part and rock work using excavator($0.8m^3$) which had breaker in straight was 9.1 times larger than earth work using excavator($0.8m^3$) which had bucket. Performance of earth work using excavator($1.0m^3$) was 1.3 times larger than using excavator($0.8m^3$) in straight and curve part. Working performance in earth work using excavator($0.8m^3$) was influenced by the conditions of radius of curve, width of roadway, slope gradient. It is not influenced by diameter and number of root stock.

• Korean Journal of Clinical Laboratory Science
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• v.40 no.2
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• pp.153-162
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• 2008

The main purpose of this study was to investigate relationship between WRMD (Work Related Musculoskeletal Disorders) symptoms and dangerous factors in medical technologistes who work in Gwang-ju city and Jeollanam-do province. Experimental group was 74 medical technologistes at hospital centers, hospitals, general hospitals, university hospitals. From the this survey, we found that significant statistical difference in WRMD symptoms by general characteristics (sex, exercise) and working environmental characteristics (examination numbers, time of margin, repetition, intensity of work, time of using PC). In the general factors, Odds ration in male vs female, do exercise vs do not exercise were 4.557 (95% CI=1.003-20.713), 2.747 (95% CI=0.59-12.783). In working environment factors, Odds ration in little of examination numbers vs a lot of examination numbers, little of time margin vs a lot of time margin, non repetitive vs repetitive, non intensity of work vs intensity of work, little of pc using time vs a lot of pc using time were 1.901 (95% CI=0.828-4.363), 1.15 (95% CI=0.335-3.944), 3.952 (95% CI=1.095-14.262), 1.411 (95% CI=0252-7.891), 2.606 (95% CI=1.055-6.437) respectively. For prevention of WRMD symptoms, Most of hospitals should improve medical technologists of working circumstances, especially control a intensive of work, working speed and guarantee enough break time. Therefore, This study suggests that increasing workers and examination of automation, streching during working be needed.

• Journal of Korean Society of Forest Science
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• v.80 no.2
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• pp.220-231
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• 1991

The main purpose of this research is to standardize the logging operation with special reference to the net working time for thinning. This study was carried out to obtain the standard working method and working technique for Korean logging operation through the comparison of the present Korean working method and the German standard working method 1. The net working time devided into work elements showed little difference between those two working methods. 2. From the correlation analysis, net working time was significantly correlated with breast height diameter, the dependant variable, with the highest correlation coefficient in each species. 3. Total working time increases by 11 to 13 seconds to every 1 centimeter increase in breast height diameter from i to 16 centimeter. 4. The result of this study concluded that the German working method is recommended for improving the labour problems in the forest operation due to high wages and lack of manpower gradually increasing from now in Korea. In addition to the application of this standard working method, the technical training for the method should be done to the workers for improving the productivity.

• Journal of Family Resource Management and Policy Review
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• v.17 no.2
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• pp.93-119
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• 2013

The actual time fathers spend in childcare has not increased much in spite of recent attention paid to nurturing their children and changes in the fathers' role. In this study, parenting time is measured by time spent in childcare, shared housework, and shared leisure. In this way, this study seeks to analyze trends in fathers' time spent with children and the factors that influence fathers' participation in parenting. The data source for this study was the 2009 Korean Time Use Survey. The main results of this research are as follows: First, when measuring childcare time as a primary activity, fathers' time spent in parenting averaged 17 minutes on weekdays and 32 minutes on Sundays. This extended to 44 minutes on weekdays and 166 minutes on Sundays when including the secondary childcare time and the shared time with their children while doing housework or leisure. Second, fathers' probability of participating in childcare was higher for fathers who had shorter working hours, younger children, higher spouse average monthly income, and a college or higher education level. The variable that influenced fathers' participation in shared housework on weekdays was working hours. On Sundays, the variables were working hours, age of the youngest child, and the type of occupation. Fathers' participation in shared leisure was influenced by father's working hours, number of children, age of the youngest child, and type of occupation on weekdays. On Sundays, it was influenced by working hours and the age of the youngest child.

• Journal of Family Resource Management and Policy Review
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• v.19 no.3
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• pp.81-99
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• 2015

This study investigates the balance between work and family, and the happiness of married working women who have preschool-aged children. Data were collected from 321 questionnaires that consisted of three parts: 1) basic demographic variables, 2) family-life variables, and 3) working-life variables. SPSS 21.0 was used for the statistical analysis. The variables that were identified to have a statistically significant impact on the balance between work and family were income, age of first child, time spent on housework and childcare on weekdays, time spent on housework on weekends, family-friendly service in the workplace and flexibility of work schedule. 2) The variables that were identified to have a statistically significant impact on happiness were age, income, time spent on housework on weekends, satisfaction with spouse's participation in housework and childcare, average working time, family-fiendly service in the workplace, flexibility of work schedule, and balance between work and family. The majority of the variables that influence balance between work and family, and happiness related to aspects of work, such as family-fiendly service, flexibility of work schedules, and average working time. The results also found that the load of housework and childcare on weekends is a heavy burden for working women. Further research needs to focus on developing the extending index of happiness including the measure of balance between work and life. In addition, further studies with more varied groups need to be conducted.

• The Journal of the Korea Contents Association
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• v.15 no.8
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• pp.280-292
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• 2015

The current study examines the mediation effect of the work-family spillover between full-time married working women's inefficient working culture and career interruption intention. The mediation effect is tested by classifying the work-family spillover effect into two subfactors: the work-family conflict and the work-family facilitation. For this purpose, we sampled 281 full-time married working women aged between 30 and 50s and conducted a hierarchical regression analysis. The main results are as follows: both work-family conflict and work-family facilitation play the role of partial mediation. This finding implies that it is necessary to carefully examine the effects of subfactors for work-family spillover to married working women's career interruption.