This study aimed to look into the impact of  production planning practices and techniques as a fundamental role of product management in a manufacturing organization's operational costs. The study takes a closer look at the production process in manufacturing organizations in Johannesburg. The following objectives were listed: (1) to determine the outcomes of the organization's production planning practices and techniques, and (2) to evaluate the techniques of production planning execution on organizational efficiency, and lastly (3) to investigate the impact of production planning on the organization's productivity. The research followed a quantitative approach from a case study. Data was gathered using questionnaires that were administered to operational staff, supervisors, and middle management employees in the Company understudy. The study population included all production planning employees and their supervisors and managers in one of the South African manufacturing industries. The study's findings revealed that the practices and approaches were applied and significantly impacted the overall outcome. Although the results indicated that the production department was efficient, not every department area was efficient