A Survey of the Relationship between Transformational- Transactional Leadership Style and Organizational Silence/Voice: A Meta-Analysis Approach

Improvement in today's organizations requires the empowerment and optimal use of the organization's human resources knowledge, skills opinions and ideas. Various organizational factors can cause non-hearing (silence) or hearing (voice) opinions of employees. One of the key factors affecting organizational silence or voice is leadership style. The Researches that to survey the impact of organization's leadership style on organizational silence or voice was scattered and do not offer comprehensive result. Accordingly, the present study aimed at meta-analysis of research on the impact of transformational- transactional leadership style on organizational silence or organizational voice. The results of this study indicate that at 95% confidence level, the effect size of transformational leadership style with organizational voice is 0.442 and the effect size of transformational leadership style and transactional leadership style with organizational silence are 0.440 (reversed) and 0.460 (direct), respectively. In other words, Transformational leadership style is driving organizational voice and organizations can have active employees and benefit from their ideas by shift their leadership style from transactional leadership to transformational leadership.