According to the UN Recommendations on Statistics of International Migration (revised in 1998), long-term international immigration is recorded after an individual enters a country and establishes his usual place of residence there for more than a year.So, When Korea government build new policies, immigrant laborers and children of illegal migrants should be counted to follow this guideline.
Korea used to be a migrant-source country, sending farmers, miners, nurses, and workers to the United States, Germany, and the Middle East.
The Korean diaspora numbers 6.82 million as of 2009, including 2.34 million in China and 2.1 million in the United States, a slight decline of 220,000 since 2007.
Korea experienced government-initiated rapid economic growth from the 1970s on, which has been called the "Miracle on the Han River".
The government of Korea initiated a discussion whether to establish independent Immigration Office to accommodate fast-growing immigration and to prepare inclusive and rational immigration policies, from 2003, without progress.
The Foreigner Policy Committee headed by the Prime Minister is responsible for coordinating policies concerning foreigners, which had formerly been handled by multiple ministries.
However, its role is limited due to a shortage of resources and manpower.
Establishing an Immigration Office is expected to solve these problems by concentrating all the related resources and manpower under one umbrella.
An exception is made for those whose non-financial contribution to the nation has been specifically recognized by the Minister of Justice, and for holders of a business visa who have invested more than US0,000.
Immigration policy is overseen by the Ministry of Justice through the Korea Immigration Service.
Related ministries include: Ministry of Labor, Ministry of Health and Welfare, and Ministry of Foreign Affairs and Trade.
The Nationality Act, Immigration Control Act, Multicultural Families Support the Act, and Framework Act on Treatment of Foreigners are the foundation of immigration policy in Korea.