International migration has become a key challenge and concern in the European Union (EU) and most part of the word. On the one hand, the freedom to move to another Member State is the right guaranteed for all the EU citizens. On the other hand, emigration or immigration is a longstanding concern for policy makers in many countries. Generally, human capital is one of the future sustainable competitiveness resources. Moreover, now, as the Lisbon Strategy is being replaced by the new EU strategy Europe 2020 for smart, sustainable and inclusive growth (2010), there is evidence that mobility in the EU will increase. In order to achieve the goals of the strategy Europe 2020 (2010), especially employment target, the flagship initiative “Youth on the Move” places a lot of emphasis on mobility as in moving to another country to study, train or work. The perceptions of this research show that growing mobility can be followed with new migration trends in the future. Moreover, no single answer to the question what level of migration (emigration or immigration) should be tolerated in the context of sustainable developing economy could be provided. This research not only confirms this observation and theoretical problem of “sustainable migration” but goes much further by discussing the reasons why one of the highest emigration rates in the EU happened to be found in Lithuania.