What accounts for turnover intention in the Australian public mental health workforce?

High staff turnover is common within the Australian public mental health workforce, contributing to workforce shortages and ultimately impacting the ability to provide stable efficient, effective, and ongoing optimal care to the community. In this study, we aimed to (a) establish the most pertinent factors associated with increased turnover intention in the public mental health workforce in Australia, and (b) establish whether such factors differ between metropolitan and rural services. We used a cross-sectional, correlational design using an online survey method. In total, 235 mental health service staff of various disciplines and levels, from four public hospitals in Victoria, Australia participated in the study. We used three feed-forward multiple regression analyses to assess the study aims. We found that job satisfaction, occupational burnout, and understaffing may be the most pertinent factors to consider regarding turnover intention. Job satisfaction and occupational burnout were factors endorsed across the entire sample, as well as specifically within both the metropolitan and rural services, while understaffing was a pertinent factor regarding turnover intention across the entire sample and for rural services, but not metropolitan services. Our findings regarding the pertinence of job satisfaction, occupational burnout, and understaffing in turnover intention provide key information that may be used to inform interventional targets aimed at reducing attrition from the public mental health workforce in Australia.