Organisational Citizenship Behaviour (OCB) plays a pivotal role in enhancing workplace productivity, fostering a positive organisational culture, and improving overall performance. However, Indonesian small and medium-sized enterprises (SMEs) encounter several challenges in maintaining a strong OCB. To address this issue, the present study aims to investigate the role of government management, business executives, and organisational commitment (OC) in shaping OCB, while also examining the moderating influence of job satisfaction. A survey was conducted to gather data from SMEs operating in Indonesia. Structural equation modelling was utilised to analyse the relationships between government management, business executives, OC, job satisfaction, and OCB. The findings indicate that government management, business executives, and OC significantly contribute to strengthening OCB, thereby enhancing employee productivity. Furthermore, job satisfaction exerts a positive moderating effect on OCB. Based on these findings, it is recommended that Indonesian SMEs prioritise the promotion of government management, business executives, OC, and job satisfaction to reinforce OCB.