Deviant workplace behavior (DWB) has caught the interest of numerous academics in a number of areas, including definition, causes and effects. Numerous organizations have carried out studies. However, there has not been enough focus on law enforcement agencies. This study investigates the antecedents of DWB in Malaysian law enforcement agency. A qualitative study involving officers from various departments was carried out. Purposive sampling was used to recruit them, and thematic analysis was used to examine the data gathered. According to the study, the antecedents of DWB among Malaysian law enforcement professionals were composed of seven elements. For example, inadequate education and upbringing, lack of funds, excessive stress, incompetence and dishonesty, workplace culture, living expenses and family problems. This study’s practical implications will improve employee engagement and performance by lowering DWB. In addition, law enforcement personnel must be responsible and efficient in their duties. The results of this investigation offered a through comprehension of the reasons for DWB and provided a model on antecedents of deviant workplace behavior in law enforcement agency.