Japanese immigration law has been amended several times since 2000. These revisions aimed at coping with globalization and regionalization in East Asia. Since mobility is a critical issue for establishing a transnational labor market and ultimately a regional community, this article examines the interaction between Japanese immigration law, especially that of the Industrial Training and Technical Internship Program, and the struggle to build an East Asian Community. This article proposes enhancing the mutual recognition of certifications of skill as a means to promote the movement of people in the region.