근골격계 부담작업 평가에서 개별장면의 대표값들과 전문가판정 결과 간의 비교

The workload assessment is very important in the MSD work survey and in the priority assignment for improving work environment. However, the results from the workload assessment could be varied by which representative value of a set of sampled work scenes is selected as well as by which ergonomic evaluation tool is applied. This study aimed to compare the representative values of a set of sampled work scenes with the expert's judgment in workload assessment. In this study, OWAS, RULA, and REBA were applied for the 32 elementary jobs of a medium-sized company, then mean, mode, median and maximum values were calculated for the jobs. In the non-parametric statistical analysis, there were statistically significant differences among the work scene selection rules for all evaluation tools. For OWAS, the mean value was most similar to the expert's judgment. On the other hand, when RULA and REBA were applied, the maximum value showed the least gap with the expert's judgement.