This study examines the contribution of ethical leadership to internal communication effectiveness by examining the influences of ethical leader behaviors, such as fair treatment, role clarification, power sharing, people orientation, integrity, ethical guidance, and concern for sustainability, on symmetrical internal communication, perceived leader credibility, and employee engagement. Results showed that ethical leadership as an antecedent factor plays a critical role in nurturing the symmetrical communication system of an organization, which in turn engages employees. Ethical leader behaviors also help establish leader credibility (i.e., trustworthiness and expertise) as perceived by employees. Symmetrical communication mediates the influences of power sharing and people orientation on employee engagement. Significant theoretical and practical implications of the study findings are discussed.