There are theoretical and disciplinary field links between career development and human resource development. However interdisciplinary dialogue between the two fields has been essentially limited to one-way dialogue. This one-way dialogue occurs from within the human resource development field, due to the explicit inclusion of career development as a key functional area of human resource development. This paper overviews the theoretical foundations and traditions of each of these fields, and positions them against the contemporary backdrop of the 21st century. This paper draws upon the literature which advocates for multilevel theory-building. It is argued that both disciplines need to enter into engaged dialogue and interdisciplinary research as the synergy and insights generated would be beneficial for both fields. Multilevel research and theory-building would produce a much richer understanding of the dynamic nature of the contemporary career and its complex interplay with occupations, organisations, industries and global economic forces.