ANALYSIS OF WORKING POSTURE USING THE REBA METHODTO EMPLOYEES OF THE POLYPROPYLENE PRODUCTION DIVISIONAT PT HARAPAN SEJAHTERA KARYA UTAMA SIDOARJO

Abstract

PT Harapan Sejahtera Karya Utama is a company engaged in the plastic industry,
especially polypropylene. This company has been distributed to companies in East
Java. Four workstations still do not apply ergonomic work postures in the production
process. This research aims to determine the action level value of the REBA score and
design an ergonomic work posture. From the research that has been done, it was found
from the NBM questionnaire that 58% of workers have pain on back, and 47% have
pain on waist. Related the REBA scoring results, in the process of checking raw
materials, the process cutting materials, and packaging, the REBA score of 5 was
obtained, which’s a medium risk with an action level of 2. the process of transfer
materials obtains the REBA score of 11, which’s a very high-risk with an action level
value of 4. Based on the REBA score, a proposal was made to improve the working
posture of workers in the polypropylene production division, the process of checking
raw materials, the process cutting materials and packaging, and obtained a REBA score
of 2 out of 5, where this value’s better than initial work posture score. For the material
transfer process, the REBA score is 3 out of 11, where this value’s better than initial
work posture score. Related to this, the company should pay attention to the safety
and health of employees when doing a job, such as the optimal work posture at work.