Purpose This study aimed to examine how senior leadership influences corporate communication and employees' attitudinal and behavioral outcomes. Using two-way symmetrical communication model in public relations and leadership theory, it investigated the effects of CEOs' task- and relationship-oriented leadership on symmetrical internal communication, employees' organizational commitment and communicative behaviors. Design/methodology/approach An online survey was conducted with 417 full-time employees working in various industries in the United States. Findings The results showed that CEOs' relationship-oriented leadership significantly influenced symmetrical internal communication, which, in turn, increased affective commitment and employees' scouting behavior. CEOs' task-oriented communication had no significant effect on symmetrical communication. Originality/value This study advances theoretical understanding of two-way symmetrical communication in relation to senior leadership and provides practical insights for corporate leaders and public relations practitioners regarding how to improve employee outcomes through CEOs' strategic leadership and internal communication practices.