This article examines how leaders make use of different coaching media, namely face-to-face coaching and e-coaching, to coach and regulate the behavior and performance of followers. Specifically, we examine coaching medium as the mediator of the relationship between two coaching styles and three work outcomes (adaptive performance, creativity, and emotional exhaustion), based on a two-wave longitudinal field study of 114 employees in Hong Kong. The results of structural equation modeling show that the two coaching styles (guidance and facilitation coaching) are indirectly related to adaptive performance, creativity, and emotional exhaustion, as mediated by choice of coaching medium. Theoretical and managerial implications are discussed. JEL Classification: M54, O32