home countries (Jasso and Rosenzweig, 1982). Moreover, nearly one-quarter of male migrants who came to Canada in 1996 left within five years (Aydemir and Robinson, 2008). It is true that some high-skilled workers return to home countries, not just moving out abroad. Then, why do they come back? First, they return home because they cannot adopt themselves to a new environment abroad. If they have trouble finding a job or making social connections, they might consider returning home. Dustmann and Görlach (2016) point out that if migrants struggle to assimilate or learn the language, this can contribute to their desire to return home. Second, they return home because home countries have economic opportunities. One of the most critical reasons of high skilled outflow is wage gap between home countries and host countries. Many highly educated people go abroad to find a better job with higher salary. If home countries have a better job environment with reasonable salary, they are more likely to return home. Whether countries focus on tertiary industry or not can also be an important sign for high skilled labor abroad to return home. If countries have more budget for R&D and focus on a knowledge-based economy, workers would expect that they are more likely to get a suitable job where they can make use of their experiences abroad and contribute. Shin and Moon (2018) mentioned that some migrants abroad were interested in engaging their home countries but did not want to permanently return. Thus, it is important for governments to supplement return migration support policies. Third, they return home because home countries offer benefits for returning from the diaspora abroad. Countries need many high skilled workers to stimulate their economic development. Thus, some countries offer benefits to highly educated people such as tax exemption, housing, and legal benefits. Returning migrants can contribute to their home countries in various fields. First, return migration improves financial capital, entrepreneurship and social networks. They return home with a significant amount of financial capital, and a large portion of these savings is generally invested in housing and new businesses. Also, return migration has social networks around the world, which strengthens social networks within home countries and across the world (Adda et al., 2014). When migrants return home, they enhance social networks in several key ways. They build ties with other returnees and local non-migrants in job findings. They can also connect with