In today’s rapidly changing business environment, intrapreneurship is increasingly considered important for organizational success. By extending previous intrapreneurship literature which mainly focused on large corporations and an organization-level perspective, the present study investigated employee-level intrapreneurship in the context of entrepreneurial firms, where the role of employees are even more important for innovation and competitiveness. Specifically, the current research proposed that pursuing social value of organizations should enhance employee intrapreneurship, and aimed to uncover underlying mechanisms by investigating the role of organizational identification and task significant in the relationship. Besides, employee age was expected to moderating the mediating relationship between pursuing social value of organizations and employee intrapreneurship through organizational identification and task significant. We collected data from employees working at two Korean entrepreneurial firms. The results showed that pursuing social value of organizations positively affected employee intrapreneurship through organizational identification and task significance. In regard to moderated mediation, employee’s age negatively moderated the indirect effects of pursuing the social value on intrapreneurship via task significance. The theoretical and practical implications of the present research were discussed.