Massive migration both within and between countries has been witnessed over the last two centuries. Migration is a multifaceted event with significant socioeconomic, cultural, political consequences for both receiving and sending countries/regions. Migrants typically move to a more developed region with the hope of obtaining better employment and living standards. Migrants, a cheap labor source with high achievement motivation, seem to be the ideal workforce for aging societies that have an urgent need for working populations. Despite migrants being needed for local economic growth, migrant workers are often marginalized in host societies. In addition, lacking human, social, and cultural capital, migrants are more disadvantaged in the job markets, especially during economic downturns. Life establishment in host societies is by no means an easy task for migrants who are also confronted with issues such as cultural differences and extra socioeconomic pressures. Institutionalized and daily discrimination from host societies also have significant negative impacts on migrants’ professional and everyday lives. Thus, migrants often report lower levels of happiness, job satisfaction, and health than their local counterparts. It is urgent to facilitate migrants’ integration and diminish social division between migrants and locals to improve migrant workers’ life quality in the host societies.