Abstract. Mutual cooperation (gotong royong) is carried out by the community to achieve common goals. Some activities carried out through mutual cooperation include the construction of places of worship, community parks, village roads, and other public facilities. Because mutual cooperation is done voluntarily and for communal purposes, in its implementation, important aspects are often overlooked, resulting in the quality of mutual cooperation falling far short of expectations. Two commonly overlooked aspects in the importance of mutual cooperation in the construction of public facilities are construction management and occupational safety. Therefore, efforts need to be made to improve the quality of mutual cooperation through education on the importance of construction management in the construction of public facilities, as well as the importance of considering health and occupational safety (K3). The proposed solution to address this problem is to conduct training on construction management and occupational safety. The methods applied in this partnership scheme are direct practice and collaborative learning in a community playground construction project. Some management techniques applied in the service activities include Participatory Impact Monitoring (PIM) and Focus Group Discussion (FGD). The result of this program is an increased understanding of the community regarding construction management and health and occupational safety.