Not much research has been done on the well-being of immigrants in receiving countries, however the few studies that have been conducted indicate some notable trends.
In the beginning it is quite difficult to settle for an immigrant. Aside from potential culture shock, there are many other things a person must overcome. Language barriers and a lack of locally recognized skills and qualifications can lead to temporary unemployment. According to statistics from the European Observatory on Racism and Xenophobia, 28% of foreigners aged between 25 and 49 in Europe do not find work in the first year, but according to the same data, the percentage of unemployed foreigners drops dramatically after a year of residence. However, there are several things that aim to improve the quality of life and well-being of immigrants and limit the impact of such difficulties upon first arrival. One of these provisions is that most countries provide social guarantees and financial support if you live in a state as a legal immigrant.
Indeed, welfare research has shown an inverse correlation between increases in ethnic diversity and government funding of welfare. However, this often does not have a large impact on the overall welfare level of immigrants, as very often social groups and community centers (based on nationality or religion) are established to support the immigrant population. They typically provide services to their members, such as financial aid, and provide a hub to preserve a person's culture, traditions, and religion.