Professional transition, employment, and reemployment are major concerns for nations facing adverse economic situations. The employability construct represents a scientific challenge in order to better understand the relationship between the job seekers' issues and the expectations of the world of work. This paper presents a review of the concept of employability. Three main perspectives (educational and governmental, organizational, and individual) that are not exclusive can be identified. This review highlights the importance of adopting a systemic integrative approach and a wider interpretation of employability. A research agenda to develop the theory and applications of the concept of employability is proposed.