The research aims to improve AMA Group’s project management to address project delays and identify the root causes. It uses PMBOK as a problem-solving approach, utilizing expert judgment and historical data to identify root causes and assess project management aspects. The root cause of project delays is related to project scope, schedule, and resource management. Work Breakdown Structure (WBS) and Critical Path Method (CPM) are recommended tools for project scope management, scheduling, and resource management. These techniques enable effective change control, comprehensive scope planning, realistic schedule planning, streamlining workflow processes, addressing labour shortages, and regularly reviewing and improving project structures and processes. By integrating these tools, AMA Group can mitigate potential delays and enhance project efficiency.