Corporate social responsibility is among the issues that has received the attention of our whole society, scholars and managers in recent years. This research attempts to clarify the impact mechanism of corporate social responsibility on the retentionof employees working in the firms. The current research also examines the mediating effects of perceived pride and organizational identification of employees in the relationship between corporate social responsibility and employees’ retention. This research collected data through questionnaire survey using a convenient sampling method with the respondents are employees in small and medium enterprises in Hanoi City. We obtained 210 valid questionnaires and testing the hypothesisapplying SmartPLS software. The analyzed results show that social responsibility does not directly affect employees’retention behavior with the firms, but via the mediating effects of perceived pride and organizational identification of employees with the firms. In addition, perceived pride of employees has no direct effect on employees’ retention behaviors with the firms.