This paper attempts to provide an understanding of employee behavior among gen Y known as millennial workers in banking industry. This study provides insights into how internal brand management, brand commitment, job satisfaction shape brand trust, brand citizenship behavior, and intention to stay. Data were collected from 635 employees of public banking in Indonesia. Structural equation modeling (SEM) was used to test the model and the hypotheses. Findings reveal that internal brand management has a significant effect on brand commitment and job satisfaction. This study also found that brand commitment has strong impact on brand trust and brand citizenship behavior. Then, job satisfaction has significant effect on brand citizenship behavior intention to stay. The distinct of this study is the integration of brand commitment and job satisfaction for its effect on brand trust, brand citizenship behavior, and intention to stay of employees as well providing empirical support for their relationship within the context of banking industry.