This study was conducted in establish how teachers moonlighting and its impact on their job performance in secondary schools in Surat city region. The objective of research is to find the reason behind teachers moonlighting. Sixty-four respondents in all participated in this survey. Information was gathered using qualitative methods using an interview guide. Both quantitative and qualitative methods were used to analyse the data, and the results showed that teachers in Surat city were engaged in part-time teaching at hospitals, giving private lessons, working from home, and employment in banking. The study also identifies the factors that contributed to teachers' moonlighting behaviour, including low pay, a lack of incentives, their extended families, the school atmosphere, personal development, and job instability. Results from the analysis were disclosed.