In recent years affect at work has been an issue of great interest to researchers and practitioners. However, there has been very little research to precisely model the process in which positive affectivity lead to employability in organizational settings. This study applied the theoretical basis of Broaden-And-Build theory. The main purpose of this field research was to explore the mediating mechanisms between positive affectivity and employability. Data were collected from 283 employees in forty-one organizations in Taiwan. Results showed that adaptability mediated the relationship between positive affectivity and employability. Specifically, positive affectivity might influence employability by enhancing employee's adaptability.