Legal reform is an urgent need in regulating the enforcement function of the Business Competition Supervision Commission (KPPU) related to monopolistic activities in Indonesia. This study aims to analyze existing problems in the law governing KPPU enforcement against monopolistic practices and formulate the necessary reform measures. This research method uses analysis of legislative approaches, literature studies and case studies in several cases that appear in several media. The results of the analysis show that the existing legal arrangements have not been fully able to overcome the monopoly problem effectively. Several obstacles such as limited sanctions, and limited authority of KPPU in the complicated enforcement process are the main obstacles in eradicating monopolistic practices. Therefore, the legal formation proposed in this study is to make significant changes to several aspects, namely increasing burdensome sanctions, and giving enforcement authority to the KPPU to simplifying enforcement procedures. In addition, there is a need for cooperation between KPPU, related institutions, and the private sector to ensure the effectiveness of enforcement. The implementation of information technology is also proposed to speed up the investigation and enforcement process. This legal reform is expected to increase the power of KPPU's authority in handling monopoly cases, protect consumer interests, and encourage healthy competition in the business world in Indonesia.
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