Ethics education has become a central concern in professional education as organizations and societies confront recurring ethical failures, regulatory violations, and erosion of public trust. Professions such as accounting, management, law, engineering, healthcare, and information technology increasingly demand not only technical competence but also ethical judgment, integrity, and responsibility. This paper examines the influence of ethics education on professional behavior by synthesizing theoretical perspectives, empirical findings, and pedagogical approaches. Using a conceptual integrative review and design-oriented framework, the study explains how ethics education shapes moral awareness, ethical reasoning, and behavioral intentions, and under what conditions it translates into ethical professional conduct. The paper proposes the Ethics-to-Behavior (E2B) Framework, linking curriculum design, learning processes, organizational context, and individual characteristics to observable professional behavior. It further evaluates instructional methods—including case-based learning, experiential simulations, reflective practice, and codes-of-conduct integration—and discusses challenges such as moral disengagement, cultural relativism, assessment difficulties, and the gap between ethical intent and action. The paper concludes with implications for educators, professional bodies, and organizations seeking to strengthen ethical behavior through systematic and evidence-informed ethics education..