• 대한지역사회작업치료학회지
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• 제7권3호
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• pp.35-42
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• 2017

목적 : 본 연구는 일부지역 버스운전기사의 일반적 특성과 수면의 질 그리고 작업 능력 간의 상관성을 파악하고, 작업능력에 미치는 영향을 확인하고자 하였다. 연구방법 : 버스운전기사 120명을 대상으로 작업 능력의 측정을 위해 작업 능력 지수(Work Ability Index : WAI)를 사용하였고, 수면의 질은 수면의 질 평가(Pittsburgh Sleep Quality Index : PSQI)를 통해 평가하였다. 작업능력과 수면의 질과의 상관관계를 확인하기 위하여 피어슨 상관분석(Pearson's correlation coefficient)를 이용하였고, 수면의 질이 작업능력에 미치는 영향을 확인하기 위해 단계적 다중 회귀분석(Stepwise regression analysis)을 통해 분석하였다. 결과 : 작업능력에 영향을 미치는 변인들의 상관관계를 분석 한 결과 수면의 질(p<.001)과 근로시간(p<.001) 에서 부적인 상관관계가 나타났다. 최종적으로 수면의 질(p<.001)과 근로시간(p<.01)이 버스운전기사들의 작업능력에 통계적으로 유의한 영향을 미치는 변인으로 분석되었고, 수정된 결정계수 값($R^2$)이 0.482로 48.2%의 설명력을 보였다. 결론 : 버스운전기사들의 수면의 질과 근로시간이 작업능력에 영향을 미치는 주요 변인으로 파악되었다. 그러므로 버스운전기사의 작업능력을 향상시키기 위한 방안으로 수면의 질과 근로시간을 고려하여야 하겠다.

• Journal of Yeungnam Medical Science
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• 제36권3호
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• pp.219-224
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• 2019

Background: Korea has shown a rapid pace of aging and has become an aged society in a shorter period than Western countries. Therefore, it is important that middle-aged workers maintain their ability to work in the industrial field at the maximum level while maintaining their health. The purpose of this study was to analyze the factors affecting work ability and to use this data to maintain the working ability of middle-aged workers in the future. Methods: From 2015 to 2017, we surveyed 371 street cleaners who visited a health center for health promotion in a metropolitan city. The relationship between the general characteristics of the survey subjects and the Work Ability Index (WAI) was confirmed by a univariate analysis. Statistically significant (p<0.2) factors were selected and a multiple linear regression analysis was conducted with WAI scores as a dependent variable. Results: Age, body mass index, body fat percentage, the Alcohol Use Disorders Identification Test-Korea (AUDIT-K) scores, the Psychosocial Well-Being Index-Short Form (PWI-SF) scores, maximal oxygen consumption ($VO_{2max}$), and hypertension showed statistically significant correlations with the WAI in the univariate analysis. In the multivariate analysis, the $VO_{2max}$, AUDIT-K scores, and PWI-SF scores were included in the regression equation. $VO_{2max}$ had the greatest effect on the standardization coefficient indicating the relative contribution of independent variables, followed by the AUDIT-K scores and the PWI-SF scores. Conclusion: Programs to increase workers' physical work ability and alleviate psychosocial stress and drinking habits should be developed and implemented in the future.

• 한국건축시공학회지
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• 제14권2호
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• pp.150-155
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• 2014

건축공사 현장에서 공사관리를 수행하는 현장관리자의 작업능력은 프로젝트의 성공여부에 많은 영향을 미친다. 따라서 본 연구는 국내 건축공사 현장관리자의 작업능력에 영향을 미치는 요인을 파악하는 것을 연구의 목적으로 한다. 작업능력은 작업능력지수를 통해서 측정하였으며, 직무스트레스는 한국형 직무스트레스 측정도구를 통해서 측정하였다. 현장관리자의 작업능력은 직무스트레스가 높을수록 떨어지는 것으로 나타났다. 또한 운동, 종교보유도 현장관리자의 직무능력에 긍정적 영향을 주는 것으로 나타났다. 본 연구결과는 현장관리자의 작업능력을 향상시키는데 도움을 줄 수 있을 것으로 기대된다.

• 한국안전학회지
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• 제27권3호
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• pp.125-130
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• 2012

According to the Korea National Statistical Office data in 2010, the population over ages of 65 years would possess to 11.3% whole population of Korea in 2011 denoting Korea is already in the aging society. Old age is associated with inevitable time-dependent losses in physical capabilities. However the maintenance of physical capabilities is essential for continuing independence in old age. The work ability index(WAI) was constructed to reveal how well a worker is able to perform his work. This study focused on the discovery of an industrial and age-related influences on the work ability and job stress of workers in the shipbuilding, house managing, apartment construction industry. For this, the study conducted a job stress test using the Korean Occupational Stress Questionnaire Short Form, and employee performance evaluations using the Work Ability Index (WAI) of the Finnish Institute of Occupational Health (FIOH) on 3,228 workers in the shipbuilding, house managing and apartment construction industry. SPSS 12.0 K statistics program was used for statistics analysis and significance was verified with the Kruskal-Wallis test, a corporate body of nonparametric statistical analysis. As a result, employee performance had significant differences, depending on age, an industrial and years of service. The mean WAI score of the shipbuilding industry was lower than that of the other industry. Additionally, it was found that employee work ability decreased more as job stress increased.

• 대한안전경영과학회지
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• 제16권1호
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• pp.129-138
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• 2014

As S. Korea is becoming an "aged society", workers in the country would be exposed to higher risk of workplace injuries due to their reducing work abilities as they are getting old. To identify the relationship between the work ability and the incident rate of workplace injuries, the work ability index (WAI) scores were surveyed from 409 workers occupied in different manufacturing industries reside on north GyoengBuk area. The workplace injury statistics in the year of 2010 for the corresponding industries were analyzed and summarized with the WAI scores by age groups, years of service, and sizes of business. The results showed the WAI scores of the workers occupied in the higher risk of workplace injury was lower than that of the workers of the lower risk. It means the lower the WAI score, the higher the chance of being injured during the task. It is concluded that appropriate correlation exists between the WAI scores of workers and the incident rate of workplace injury. It is recommended to administrate individual work abilities of aged workers in order to keep low rate of workplace injuries in upcoming aged and highly aged society.

• Journal of Preventive Medicine and Public Health
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• 제28권2호
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• pp.497-510
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• 1995

This study was carried out to assess work ability of manufacturing workers and managerial workers. Subjects were 446 manufacturing workers and 278 managerial workers employed in Gumi industrial complex and the observation period was for 1 month(February to March), 1995. In this study, as a questionnaire for the assessment of work ability, we used the Work Ability Index(WAI) which was developed by Institute of Occupational Health in Finland. Major findings obtained from this study were as follows ; WAI was poor in lower economic condition, shift work, irregular diet group(p<0.05). There were no evident trends of WAS in sex, educational level, obesity index, exercise, smoking, and alcohol drinking. In the groups of sensitive to perception of stress, other industrial classification except textile and electronics, the more than 9 hours work, the evident trends of poor WAS were observed(p<0.01). In the groups of $30\sim39$ years old, $40\sim49$ years old, unmarried, high school, shift work, standard body weight, and regular .diet, WAI between manufacturing workers and managerial workers was significantly different(p<0.01) and WAI of managerial worker was worse than that of manufacturing worker.

• 대한인간공학회지
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• 제31권1호
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• pp.171-176
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• 2012

Objective: The goal of this study was to assess work ability of Korean workers in the shipbuilding industry. Background: Old age is associated with inevitable time-dependent losses in physical capabilities. However the maintenance of physical capabilities is essential for continuing independence in old age. The work ability index(WAI) was constructed to reveal how well a worker is able to perform his or her work. Method: The WAI is a kind of survey methods developed to estimate the work capacity of aged workers by the Finish Institute of Occupational Health(FIOH) in 1998. The difference of the WAI between groups in each category was tested using the Kruskal-Wallis test, and the relationship between the WAI and the workers' ages was tested by the Correlation test. Results: This study surveyed 2,709 persons working in the shipbuilding industry in Korea. The average WAI score for all workers was 40.0 denoting a Good Level. Also, workers in the shipbuilding industry had lower work ability, as compared to the results of other industries. The WAI was analyzed for different age groups(${\leq}29$; 30~34; 35~39; 40~44; 45~49; 50~54; ${\geq}55$). The results of Kruskal-Wallis test showed that significant difference was identified on the effect of aging(p<0.05). Conclusion: Advanced countries like the Finland showed decreasing tendency in good and excellent levels as aged, but there was no decreasing tendency in Korean population. The results may be attributable to the general characteristics of Korean society, such as poor social security and burden caused by role of the patriarch. It may bring forth higher work ability in aged population even their physical condition is getting worse. Application: This finding could be used for developing more accurate assessment tool of work ability for working environment.

• Safety and Health at Work
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• 제13권1호
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• pp.104-111
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• 2022

Background: The IMPPAC cohort (Implications of the COVID-19 pandemic on psychosocial aspects and work ability among Brazilian workers) seeks to understand the impact of the pandemic on Brazilian workers. This article describes the occupational profile, psychosocial aspects, and work ability determined during the baseline and follow-up measurements of the cohort. Methods: Workers were invited to participate through media advertisements, social networks, and emails. From June to September 2020, 1211 workers were included in the cohort. Follow-up measurements finished on October 2021 with 633 workers. Data were collected through standardized questionnaires using Google Forms. Psychosocial aspects were assessed using the COPSOQ II-Br. Work ability was assessed using the Work Ability Index (WAI). Results: At baseline and follow-up, high proportion of workers were in the risk zone with regard to work pace, emotional work demands, influence on work, work-family conflict, burnout, and stress. Approximately 75% of the workers reported good to excellent work ability at baseline and follow-up. Conclusion: The occupational profile, psychosocial aspects, and work ability of Brazilian workers from the IMPPAC cohort were described. Psychosocial aspects and WAI were similar at baseline and follow-up.

• 한국안전학회지
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• 제26권2호
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• pp.77-82
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• 2011

Recently, personal characteristics of organizational members arc regarded as an important factor that affects performance of organization. In addition, job stress is attributed to one of main factors that result in poor work ability and high turnover rate. In this study, job stress, work ability and DISC personality types were surveyed targeting 292 of foreman in shipbuilding company. The relationships between job stress and personal characteristics including personality types and correlation between job stress and work ability were analyzed based on the result of survey. As a result of statistical analysis, there were six statistically significant relationships between job stress and age, job tenure, work type, hobbies, exercise, personality types. On the other hand, there was a statistically significant relationship between work ability and exercise. Furthermore, negative correlation between job stress and work ability were found. In accordance with these analysis, this study presented how to improve work ability by managing job stress items and personal characteristics that affect the stress and the stress level.

• Safety and Health at Work
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• 제15권1호
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• pp.66-72
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• 2024

Background: This study examines the relationship between functional disability and work ability in workers affected by low back pain (LBP) through an analysis of correlations between the Oswestry Disability Index (ODI) and Work Ability Index (WAI). The role of personal and work factors on functional disability/work ability levels has also been studied. LBP is the most common musculoskeletal problem and a major disabling health problem worldwide. Its etiology is multifactorial. Multidisciplinary approaches may help reduce the burden of pain and disability and improve job continuity and reintegration at work. Methods: A cohort of 264 patients affected by LBP from an Italian outpatient clinic were included in a clinical diagnostic/therapeutic trial aiming at rehabilitation and return to work through an integrated investigation protocol. Data were collected during the first medical examination using anamnestic and clinical tools. The final sample is composed of 252 patients, 57.1% man, 44.0 % blue collars, 46.4% with the high school degree, 45.6% married. Results: WAI and ODI reported a negative and fair correlation (r = -0.454; p = .000). Workers with acute LBP symptoms have a higher probability of severe disability than those with chronic LBP symptoms. White collars without depressive symptoms reported higher work ability - even in chronic disability conditions-than those with depressive symptoms. Conclusion: The study found that ODI and WAI have a convergent validity and this suggests that the two tools measure capture distinctive aspects of disability related to personal, environmental, and occupational characteristics. The most important and modifiable prognostic factors found for ODI and WAI were depressive symptoms, workday absence, and intensity of back pain. The study also found a mild association between age and ODI. The study's findings highlight the importance of using a multidisciplinary approach to manage and prevent disability due to LBP.