Using longitudinal data from Germany and Australia for the 2001-2013 period, this study investigates the link between non-standard employment, such as fixed-term contracts, temporary agency work, part-time and casual work, and first birth within couple relationships. In contrast to previous studies, competing risks event history models are estimated to simultaneously consider couples' risks of first birth and of partnership dissolution. The results indicate, for example, that temporary employment of the female partner, and especially temporary agency work, decreases first birth risks in both countries. This suggests that women, in their dual role as primary carer and secondary earner, seek a secure employment position to return to after parental leave. In contrast, male partner's part-time work negatively affects the first birth risk and simultaneously increases the risk of partnership dissolution only in Australia, suggesting a more important role of men as primary earners in this country. Overall, the study highlights the twofold impact of non-standard employment on fertility, consisting of a direct influence on the first birth risk among stable couples and an indirect influence through the risk of partnership dissolution.