Job satisfaction in the government sector is essential in supporting any country's success in achieving its goals. This study investigates HRM practice's role in achieving job satisfaction through top management support (TMS) as a mediator. The research surveyed 390 employees in the Ministry of Social Development (MOSD) in Jordan using a questionnaire designed with a five-seven-point Likert scale. The questionnaires were distributed to employees in non-higher positions. Direct delivery and Google Form questionnaires were used to gather the data. A Smart-PLS approach combined with structural equation modelling (SEM) was used to perform the analysis. This study used social exchange theory (SET) to investigate factors that affect job satisfaction (JS) in the government sector and human resource management practices (HRMP). According to the research findings, there is a favourable connection between HRM practices, the support of top management support, and the level of job satisfaction. Additionally, empirical research suggests that top management support mediates the relationship between employee satisfaction and management practices related to human resources. This research contributed to advancing academic understanding of employees and HRM practices by providing empirical evidence of the elements that impact employee satisfaction in the government sector. Finally, the study findings have a substantial effect, and the knowledge they provide could be crucial for future research efforts and policy activities on this vital topic.