We examined in a 3-month longitudinal study how leader behavioral integrity relates to individual follower work engagement and how that relationship in turn connects to performance. We hypothesized that ratings of leader behavioral integrity would mediate the relationship between leader transparent communication and follower work engagement which would also have a positive relationship with performance. We tested our hypotheses using data collected from military cadets (n=451) who each rated their respective leader. Our findings show that followers who rated their leaders as exhibiting more transparent communication at Time 1 also rated themselves as more engaged in their work role at Time 2 (3 weeks later) and that their perceptions of leader behavioral integrity mediated that relationship. Follower engagement also positively related to third-party ratings of follower performance at Time 3 lagged 3 months. We discuss the implications of these findings for research on leader integrity authenticity follower engagement and performance.