The goal of this study is to propose the improved scheme that prevents the workers against musculoskeletal disorders. A questionnaire and an ergonomic assessment method were adopted to analyze the symptoms of workers` musculoskeletal disorders, and an analysis of working postures and a quantitative assessment on various processes were performed to find out harmful factors of workplace. Based on the result of questionnaire that was obtained from the workers having the symptoms of musculoskeletal disorders, it was analyzed that 371 workers corresponding to 80.1% out of the total respondents suffered or currently suffers from an ache, tingle, and numbness. The result of QEC analysis shows that the waist and the shoulder are highly exposed to the risk of musculoskeletal disorders. In case of TRIM process of gluing glass, the degree of risk on the hands and wrists is high due to repeated operation of 1200 times per day in a pinch-grip posture. The result of RULA analysis shows that the factors of muscle and weight is comparatively less risky than those of a working-posture. It also shows that the risk of musculoskeletal disorders is highly influenced by a immoderate bend of shoulder, wrist, and neck. The result of OWAS shows that, with the exception of one posture, the highest level of "4" was recorded on all of working postures. This means that the relevant working posture is seriously injurious to musculoskeletal system Therefore, the immediate improvement of facilities and the fulfillment of prevention pro-gram of musculoskeletal disorders are required in relevant workplace.