Abstract: As the development of knowledge management and the spread of ethosos of self-innovation, the study of extra-role behaviors, including voice behavior, attracts much attention increasingly. Compared with the popularity in western academia, the indigeneous empirical study awaits much reinforcement. After review of past studies, based on trait activation theory, social identity theory and homo economicus perspective, this study try to explore the construct, formation mechanism of employee voice behavior and its effect on organizational creativity. The research methods include semi-structure interview, matched-sample- questionnaire field study and lab simulation. The whole study include three substudies, that is, (1) the exploration of construct of emplolyee voice in Chinese context; (2) the research of multi-level dynamic formation mechanisms of employee voice, which includes the trait-activation-based exlporation of personal characteristics on voice, the personal-identity-based exlporation of leadership behavior on voice, and the homo-economicus-perspective-based exlporation of the interaction of personal characteristics and situational factors on voice; and (3) the research of the influence of employee voice on organizational creativity.

Key words: voice behavoir, trait activation, social identity, homo economicus, organizational creativity