The global mobility of human resources between countries is a key driving force of the currently ongoing economic and regional development all over the world. It is indisputable that the immigration of international labour force would exert many positive and important impacts on the economic, cultural and social structure of both migrant-receiving and migrant-sending countries. Actually, the trend of temporary and permanent immigrants increasing in some western countries began to gain momentum in recent years. Organization for Economic Cooperation Development (OECD 2004) reports indicated that there were more than 1 million new immigrants in the United States in 2001 and 2002, increased by 25% from 2000; in some European countries including Austria, France and Switzerland, the rates were over 15%.

However, this phenomenon in now is being oppugned by more and more local residents of some advanced areas, who complained that the increasing of labour immigration have made the unemployment rate accelerated and brought more...