In Malaysia, small and medium enterprises (SMES) account for the majority of workplace accidents. SMEs encounter challenges in achieving effective safety performance due to limitations in organisational resource in managing occupational safety risks. Scholars have a unified agreement on the substantial factor that contributes towards accident and injury, which is human factor namely unsafe behaviour. On the other hand, scholars advocated that leadership is an effective approach in encouraging safety behaviour at work, especially among SME workers. Through the conceptualization of Transformational-Transactional Leadership Theory and models established by previous studies, this paper proposed to model of both leadership styles in effecting safety behaviour as well as safety performance. A total of 107 responses were collected from Safety and Health / Human Resource personnel who work in the SME (manufacturing) firms in the northern region of Malaysia. In this research, a questionnaire was constructed by adapting items from previous studies. SmartPLS 3.2.9 was used to analyse the data by applying partial least square-structural equation modelling (PLS-SEM) analyses. The results of this research showed that safety behaviour had a substantial effect on safety performance. Furthermore, a significant mediating effect of safety behaviour could be found in the relationship between transformational and transactional leadership on safety performance. This research contributes to the existing body of knowledge by offering an alternative model that has been empirically validated which can be employed as a reference by academia and industry to explain the significant role of transformationaltransactional leadership towards overall safety performance for SME manufacturing industry.