Working posture analysis on oyster mushroom farmers using OWAS method in Lempake, Samarinda, East Kalimantan

A preliminary survey showed that oyster mushroom farmers in Lempake Samarinda experienced pain several body segments, especially at their waist. It may be attributable to the working condition requires non-ergonomic postures such as frequent awkward posture sitting or standing position. Therefore, this paper aims assess farmers. Ovako Working Posture Analysis System (OWAS) method was applied measure risk level of farmers' posture. total ten activities were observed from cultivations' process four cultivations Lempake, Samarinda, Indonesia. Each activity assessed using OWAS category based on position back, arms, legs, and load. The result 10% classified 4th category, categorized highly dangerous for musculoskeletal system, so direct improvement needed. Furthermore, 3rd 60% 2nd which is system could cause significant tension future On other hand, 20% 1st safe