Ergonomics Risk Assessment of Worker's Tasks at CPJ Farm: An Advanced Assessment Using Reba Methodology

Najwa Nazihah Ishak1 , Salwa Mahmood1 , Mohd Zakwan Zulkifli2

1Department of Mechanical Engineering Technology, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Campus, KM 1 Jalan Panchor, 84600 Pagoh, Johor

2Chareon Pokphand Jaya (CPJ) Farm Kulai, Lot 188, Jalan Sg. Sayong, 81800 Kulai, Johor, Malaysia

(*Corresponding author’s e-mail:

Page 1 – 8   |   Vol. 6 No. 1 2021   |    Available online on 1 Jun 2021


Agriculture sector is regarded as one of the essential industries worldwide and one of the unsafe sectors in developing and the developed worlds. Initial Ergonomics Risk Assessment (ERA) and Rapid Entire Body Assessment (REBA) tools have been used to analyze the worker’s posture in the maintenance department at Chareon Pokphand Jaya (CPJ) Farm Kulai. However, this kind of job might contribute musculoskeletal disorder (MSDs) related injuries, as it mostly involves tough tasks. The purpose of this project is to evaluate the ergonomics risk factors of workers’ and intended to analyze the condition of the selected task in the maintenance department at CPJ Farm Kulai. This assessment focused on cutting and welding tasks workers’ posture. This project was conducted using the ERA checklist and REBA worksheet. Kinovea
software was also used to help observe and assess the worker’s working posture. The initial ERA scores for the cutting and welding tasks are more than the minimum requirement for advanced assessment which indicates the need for further investigation. An advanced ERA needs to be performed to reduce risk factors. The results of REBA show that score obtained were 5 for both the cutting and welding tasks. Based on these scores, the worker was at medium risk for MSDs and cumulative trauma disorder (CTDs). Finally, a new ergonomic workstation design for a worker is proposed to minimize and eliminate the risk of work-related to entire body disorder exposure.


Ergonomics, Musculoskeletal Disorders, Ergonomic Risk Factors, Ergonomics Risk Assessment, Rapid Entire Body Assessment

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Human Factors & Ergonomics Journal (HFEJ), eISSN: 2590-3705  is the official Journal of Human Factors and Ergonomics Society Malaysia.  The journal is published on a biannual basis. HFEJ aims to address current research in the field of Ergonomics in addition to the broad coverage of cognitive ergonomics, user experience, physical ergonomics and others such as transportation, industrial design and industrial engineering. HFEJ is a member of, and subscribes to the principles of the COPE (Committee on Publication Ethics), as such we only accept original work.