Employee promotion, particularly within police organizations, is vital for recognizing dedication, fostering motivation, and ensuring a skilled leadership pipeline. Despite the recognized importance of these practices, there is a noted gap in research on promotion practices across different jurisdictions. This study addresses this gap by assessing the promotion practices of drug enforcement officers in the Philippine Drug Enforcement Agency (PDEA) Region 10, especially in light of persistent issues similar to those identified in the Philippine National Police. The research, which involved 86 officers, utilized an adopted questionnaire and inferential statistical analysis to examine the factors influencing perceptions of promotion practices. The findings revealed that transparency procedures and rules for promotion are moderately implemented, suggesting areas where clarity and accessibility need enhancement. The implementation of competency-based promotion was widely regarded as highly effective, indicating successful integration of these strategies, while seniority-based promotion was moderately accomplished, implying a balanced influence of seniority, competency, and performance in career progression. Furthermore, age, years of service, and rank are significant predictors, suggesting that perceptions of promotion practices are shaped by career stage, tenure, and hierarchical positioning within PDEA 10. Policy recommendations were recommended to enhance the transparency, guidelines, processes and effectiveness of promotion practices within the agency.