The non-ergonomic work postures among UMKM grilled kemplang workers is a primary concern regarding the risk of occupational health issues. Ergonomic chairs are designed to control the risks of ergonomic hazards for workers in the grilled kemplang industry in the Meranjat Village, Ogan Ilir Regency. This research aims to determine the suitability of the designed ergonomic chair prototype for gri…