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Reducing musculoskeletal disorder (MSD) risk of wiring harness workstation using workplace ergonomic risk assessment (WERA) method

Sugiono S., Efranto R. Y., Budiprasetya A. R.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2018

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Vol. 28, No. 4

536--551

EN

Bureau of Labor Statistics in Indonesia notes that musculoskeletal disorder (MSD) is the main category of injury causes in workplaces leading to 30% compensation costs. The purpose of this paper was to know the risk of work position of wire harness companies using workplace ergonomic risk assessment (WERA) for basic workstation improvements. The first step of this research was studying the literature of MSD, work posture, work position, and WERA. It subsequently proceeded with the identification and assessment process using WERA on each type of wiring harness activity. From the research results, it was obtained three jobs indicated causing muscle injury and soreness namely torque job, grommet job, and offline job. Moreover, the problem was supported by complaints from most workers known by using a discomfort survey. Based on the problem, this research was conducted to find out the action levels with WERA method and give improvement recommendation to overcome the problem of musculoskeletal disorders. The results of WERA showed that torque, grommet, and offl ine jobs needed further investigation and improvement with the scores of 31.23, 28.87, and 30.9. Recommendations were then given in the form of personal protective equipment (PPE) to reduce the risk factor scores on contract stress, to provide a new workstation design of torque job, and to add aids for solving other pain problems.

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Worksheets for Computing Recommended Notebook Computer and Workstation Adjustments

Nanthavanij S., Udomratana C., Hansawad S., Thepkanjana J., Tantasuwan W.

International Journal of Occupational Safety and Ergonomics

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2013

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Vol. 19, No. 2

259--274

EN

This paper discusses the design and development of worksheets for helping notebook computer (NBC) users to compute NBC and workstation adjustments so as to assume an appropriate seated posture. The worksheets(one for male users, the other for female ones) require the following information: body height, NBC screen size, work surface height, and seat height. The worksheets contain tables for estimating recommended NBC base angle, NBC screen angle, body–NBC distance, work surface height, and seat height. Additionally, they include flow charts to help NBC users to determine necessary adjustment accessories and their settings.

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Office Ergonomics: Deficiencies in Computer Workstation Design

Shikdar A. A., Al-Kindi M. A.

International Journal of Occupational Safety and Ergonomics

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2007

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Vol. 13, No. 2

215--223

EN

The objective of this research was to study and identify ergonomic deficiencies in computer workstation design in typical offices. Physical measurements and a questionnaire were used to study 40 workstations. Major ergonomic deficiencies were found in physical design and layout of the workstations, employee postures, work practices, and training. The consequences in terms of user health and other problems were significant. Forty-five percent of the employees used nonadjustable chairs, 48% of computers faced windows, 90% of the employees used computers more than 4 hrs/day, 45% of the employees adopted bent and unsupported back postures, and 20% used office tables for computers. Major problems reported were eyestrain (58%), shoulder pain (45%), back pain (43%), arm pain (35%), wrist pain (30%), and neck pain (30%). These results indicated serious ergonomic deficiencies in office computer workstation design, layout, and usage. Strategies to reduce or eliminate ergonomic deficiencies in computer workstation design were suggested.

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Occupationally Oriented Medical Rehabilitation and Hairdressers’ Work Techniques – A one-and-a-half-year follow-up

Arokoski J. P. A., Nevala-Puranen N., Danner R., Halonen M., Tikkanen R.

International Journal of Occupational Safety and Ergonomics

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1998

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Vol. 4, No. 1

43--56

EN

This study examined changes in work techniques and musculoskeletal symptoms after occupationally oriented medical rehabilitation arranged for 21 hairdressers who were experiencing neck-shoulder or back pain but were still able to work. OWAS (Ovako Working Posture Analysing System) analyses of working postures and questionnaire data were obtained at the beginning of the courses and one and a half years later. The participants worked with their back bent and twisted or their arms at or over shoulder level more seldom (p < .0001) at the end of the follow-up than at the beginning of the rehabilitation. Subjective work-related physical and mental strain had decreased by 45.4% (p<.001) and 27.1% (p < .05), respectively, and subjective neck and back pain by 40.0% (p < .0 1 ) and 45.3% (p < .01). respectively. This'study suggests that occupationally oriented medical rehabilitation can have significant and long-lasting effects on the rehabilitee’s work techniques and subjective well-being.