The study aims to analyze Big Five personality traits affecting various work outcomes of public servants working at the Public Non-Business Units under the People’s Committee of Hanoi City. Relying on the Big Five Theory, previous studies, and in-depth interviews with experts, the research model has been developed and tested in Public Non-Business Units. The authors carried out data collected from 420 public servants working at the Public Non-Business Units using a survey questionnaire by convenient sampling method to ascertain the impact of personality traits on diversity work outcomes (organizational commitment, job satisfaction, and performance). The descriptive statistics, Cronbach’s Alpha test, EFA, CFA, and SEM were employed for data analysis. The findings highlighted this study showed a positive correlation between Big 5 Personality Traits and organizational commitment, job performance, and satisfaction of public servants at the Public Non-Business Units. The results brought some theoretical and practical implications for leaders of the Public Non-Business Units to realize the importance of personality traits to the organizational commitment, job performance, and satisfaction of public servants as well as to add to the existing knowledge of work outcomes in the literature. There are solutions to increase organizational commitment, job performance, and satisfaction of public servants at the Public Non-Business Units in the future.