Abstract: International migration, especially illegal migrant work and workers� human rights, is one of the most complex issues in the present world. In the beginning of the 1990s, South Korea emerged as a labor receiving country. According to the Amnesty International Report 2006, around 189,000 of 360,000 migrant workers are illegal in South Korea. The present research examines the various socio-cultural aspects of illegal migrant workers� work and personal life in the host society. Migrant people inhabit in a dual cultural schema, which makes their life complex. Sometimes it becomes difficult for them to maintain their cultural dualism. Findings of the present research show that migrant workers often ignore many of their inherited cultural attributes in the host country. Their inability to handle cultural dualism contributes to their predicament. Migrant workers are also found to be involved in conflicts with people of the same cultural backgrounds, which further complicate their life and exacerbate their security and wellbeing in their precarious life. The research follows a mixed methods approach to data collection and analysis. Three-month intensive fieldwork, formal and informal interviews and case studies of key informants are the principal techniques use for collecting the data. The research site is located in the Jeonju city of Jeollabuk-do province in South Korea. It is to be hoped that the insights generated by this research will be helpful in enhancing their human rights and improving their overall wellbeing in the host country.