This study seeks to assess the quality of democracy in Korea from the perspective of migrant workers as the most vulnerable social groups. Korean democracy is seriously flawed in terms of citizenship rights for migrant workers, who face migrant-specific risks. First, economic and social rights are not equally guaranteed for migrant workers. Second, their right to education and cultural diversity are not fully acknowledged in the public education system. Third, public agreement on common citizenship without discrimination is unsatisfactory. Finally, the freedoms of association and right to collective action are relatively unrecognized. Korea is thus faced with a double challenge: achieving second step democratization for its own citizens on the one hand, and making a more “hospitable democracy” for its vulnerable groups on the other.