An abundance of research shows the benefits of participation in volunteer work for individuals, employers and the society as a whole. However, relatively little is known about the precursors of volunteer work. In this study, we aim to fill this gap by investigating to what extent work-related well-being can function as a driver of volunteer work. Moreover, building on the Conservations of Resources Theory (Hobfoll, 1989(Hobfoll, , 2011, we propose that the relationship between work-related well-being (burnout and engagement) and volunteer work is mediated by the work-home interface (work-home enrichment and work-home conflict). This hypothesis was tested in a large Swiss sample (N = 1947). Consistent with our expectations, structural equation analyses revealed an indirect relationship between (i) work engagement and volunteer work via work-home enrichment and (ii) between burnout and volunteer work via work-home conflict. In conclusion, it seems that wellbeing at work indeed functions as a precursor for volunteer work because of the consequences it has for the work-family interface.