Abstract: This paper examines the critical issue of employee turnover and its substantial impact on organizational performance. While external labor market factors contribute to turnover, our analysis reveals that preventable internal organizational factors often drive employee departure decisions. Through comprehensive research and industry case studies, we identify key turnover drivers including poor leadership practices, insufficient growth opportunities, inadequate compensation, toxic workplace cultures, unsustainable workloads, ineffective onboarding processes, and lack of recognition systems. The paper further outlines evidence-based retention strategies that organizations can implement, including regular employee feedback mechanisms, leadership development, structured career advancement frameworks, competitive compensation packages, and systematic onboarding programs. These approaches not only reduce costly turnover but position organizations to build engaged, high-performing workforces that create sustainable competitive advantage in challenging labor markets.