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Mohd Zubairy Shamsudin, Vidya Vijayakumar, Mohd Yusof Md Daud, Mohammad Adam Adman, Mohd Amir Arshad, Mohd Jamalil Azam Mustafa

Last modified: 2017-01-04


A cross sectional study was conducted at industrial packaging company to investigate work-related musculoskeletal disorder (WMSDs) among 33 workers. Observational method includes task analysis and ergonomic risk assessment to investigate WMSDs. Task analysis approach is used to determine work processes and identify generic risk factors contributes to WMSDs. Meanwhile, Work Movement Task Analysis (WMTA) instrument is applied to investigate specific work-related ergonomic risk factors. Next, body discomfort survey is conducted to determine the trend of discomfort and pain among workers. Bivariate analysis (chi square) is conducted to determine relationship between body discomfort and WMTA risk scores. The results showed most of the workers (94%) are considered in the range of moderate risk according to WMTA’s risk categories, meanwhile two cases each for low and high-risk category. While the body discomfort survey findings for neck, back, shoulder & arm and knee & legs respectively show 42%, 74%, 89% and 29% workers have symptoms of discomfort or pain. However, there was no significant relationship between WMTA risk scores with discomfort. There were other factors that causing the WMSDs disorder rather than working postures i.e. body mass index (BMI), smoking habit, psychosocial hazards and general health status are possibly seem to predispose the discomfort. The activities were generally in the moderate risk level, which requires further investigation, and need to change when required. The symptom of shoulder discomfort s substantially among workers mainly affected from pulling, pushing and lifting tasks. According to the results, it is conclude that WMSDs occurred in medium rate in this company. Taking corrective measures for reducing risk level into consideration seemed essential.


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