Interdisciplinary education has become increasingly prominent as a core instrument to prepare the next generation workforce. Yet, little is known about the impacts of long-term degree-oriented interdisciplinary education on post-graduation outcomes. This paper aims to investigate the influence of long-term degree-oriented interdisciplinary education on graduates' post-graduation plan choices and labour market outcomes using unique administrative micro-data and career-tracking data from a comprehensive research university. Our results indicate that higher levels of engagement in interdisciplinary learning increase the probability of pursuing future study and employment in a field that differs from a graduate's college degree, and are also associated with a higher probability to enter the workforce. Yet, this positive association between interdisciplinary learning and the probability of entering the workforce is specific to graduates from traditional disciplinary programmes. Additionally, our findings suggest that the impact of long-term degree-oriented interdisciplinary education on early labour market outcomes is overall beneficial but varies across degree fields. The findings of our study provided partial evidence in support of the influence of long-term degree-oriented interdisciplinary education on post-graduation plan choices and early labour market outcomes. We suggest that given resource constraints, higher education institutions could consider relaxing module choice restrictions in traditional disciplinary programmes to promote interdisciplinary education. However, it is important to note that higher education institutions should carefully consider the potential trade-off between the breadth of interdisciplinary content and the depth of specialist content, in order to strike a balance.