The heavy work attitude and degree of the force occur work-related musculoskeletal disorders (WMDSs) inautomobile parts manufacturing company. The harmful process is required workplace improvement planning in order to remove harmful work. Therefore, this paper describes improvement of work for prevention of WMSDs through job strain index (JSI), ovako working posture analysing system (OWAS), and rapid upper limb assessment (RULA) in automobile parts manufacturing company. Finally, continuous accomplishment of this countermeasure was created healthy working place.