Current literature on careers, social identity and meaning in work tends to understate the multiplicity, historical significance, and nuances of the concept of calling(s). In this article, we trace the evolution of the concept from its religious roots into secular realms and develop a typology of interpretations using occupation and religious orientation as core dimensions. We offer a definition of calling that emphasizes action, a convergence of selves, and a pro-social intention. Next, we identify a number of key conditions necessary for discovering a calling, explore the relevance of callings to a range of organizational behavior phenomena, and offer suggestions for future research.