Drawing on social exchange and reformulation of attitude theories, the research model is proposed to test the interrelationships of ethical leadership, procedural justice, organizational trust, work engagement, and organizational innovation. Organizational trust and work engagement are identified as sequential mediators to explore the relationships between procedural justice, ethical leadership, and organizational innovation. Furthermore, a proactive personality is identified as a moderator for the relationship between work engagement and organizational innovation. This article advances and extends the knowledge of the antecedents of organizational innovation from organizational fairness perspectives and ethical leadership style in the Chinese IT industry.