This study investigates the influence of generational diversity management and the quality of leader–member exchanges on innovative work behaviors, mediated by employee engagement. A group of 1839 employees at Indonesia’s largest telecommunications company, which represents three generations – Baby Boomers, Gen X, and Gen Y – participated in the study. The results suggesting that employee engagement strengthens the influence of quality in leader–member exchanges, and diversity management leads to positive innovative work behaviors. Generational diversity, leader–member exchange, and innovative work behaviors are lowest among Gen Y, but are highest among Gen X. Employee engagement peaks in Baby Boomers.