WORK POSTURE ANALYSIS USING THE RAPID OFFICE STRAIN ASSESSMENT (ROSA) METHOD AT PERUMDA TIRTANADI

Abstract

Perusahaan Umum Daerah (Perumda) Tirtanadi, as one of the agencies providing clean water and wastewater management services in North Sumatra, has a fairly high administrative and operational workload, especially for employees who work in a sitting position for a long time in front of the computer. This research aims to analyze the work posture of office workers in the Tirtanadi Regional Public Company (Perumda) using the Rapid Office Strain Assessment (ROSA) method to identify the level of ergonomic risk and the potential for musculoskeletal complaints. The type of research used is descriptive qualitative with an observational approach. Data was obtained through direct observation and a Nordic Body Map (NBM) questionnaire that was distributed to 10 respondents from 10 different divisions who routinely work using computers. Research results show that some workers experience complaints on the waist, back, neck, and shoulders, which indicates a less than ideal work posture. Based on the results of the ROSA assessment, there are two divisions that obtained a score of >5 (Marketing and Assets), which means that they need immediate improvement in the workstation to prevent further musculoskeletal disorders. Meanwhile, the other eight divisions showed a score below 5 which is still classified as safe but still needs routine monitoring. This research recommends the application of ergonomic work chair adjustments, monitor position settings, and periodic stretching to increase employee comfort and productivity.