The aim of this study was to evaluate the effectiveness of 5S practices implementation in COLDAIR Engineering Company for manufacturing and assembling. The effectiveness of 5S implementation was major concern for organization in industrial sector in the last decade because many 5S project failed to achieve the expected results by optimizing the workplace environments. the researchers used a descriptive methodology. The targeted population of this study was the employees of COLDAIR Company. From The survey population (managers, supervisors, workers), 40 employees were selected to represent the sample using random sampling technique. Finding from this study indicate that 5S implementation increase the efficiency in the workflow, improve working environment in the workplace, reduce human movement, and allows for more orderliness after removal of unwanted items. One more significant findings is that 5S practices Minimize the causes of faults with auditing and continuous cleaning Work environment, preventing accidents and injuries by developing a safe work environment. The findings of this research provide insights for organizations that want to start a journey of continuous improvement for productivity and lean manufacturing, because the first step in that journey is to effectively implement 5S practices. For the practitioners and managers responsible for 5S methodology implementation, this paper shows them how they can effectively implement 5S using a thoroughly tested tools to provide environment necessary for the operation of their processes. Further investigations are needed to examine the mediating role of 5S methodology in the relationship between ISO 45001:2018 and occupational health and safety.

Keywords : Workplace Environment, Continuous Improvement, Productivity, Lean Manufacturing, Safety.