Construction sectors are familiar with dangerous and exposed to accidents including of minor accidents, ergonomics problem, outdated machinery can cause the breakdown, and lack awareness from employers and employees. However, the occupational can be reduced through the effectiveness of prevention measure by training, good housekeeping, hazard assessment, better personal protective equipment (PPE) and inspection. The main objective of this research is to identify safety management implementation in medium and large grade contractors. A questionnaire was used as the main instrument on a Likert-type scale with a total of 46 returned questionnaire out of the 100 distributed. The respondents of this study are includes project manager, site supervisor, Safety and Health officer (SHO), engineer, clerk, planner, Quantity Surveyor (QS) and architect. The finding of this paper was identified mostly the contractors implement safety before start bidding; and after bidding and before start site work phases. The highest rank of safety activity is implemented in contractor companies is a formal safety incentive program. Furthermore, the results show significant differences on safety management implementation to working experiences and the relationship between contractor companies and safety management implementation. Based on the findings, it can be concluded that the medium and large grade contractors implement safety management properly and good.