In July 2007 The Wall Street Journal (WSJ) reported that a growing shortage of skilled labor in Eastern European countries such as Slovakia was driving up wages in key industries and reducing business income. The reason for the shortages was a large migration of skilled Eastern European workers to Western European countries. According to the simple immigration model, the supply of workers will a. rise in both Western European and Eastern European countries until the wage rates fall in both countries.
b. fall in both Western European and Eastern European countries until the wage rates rise in both countries.
c. fall in Western European countries and rise in Eastern European countries until the wage rates become more equal.
d. rise in Western European countries and fall in Eastern European countries until the wage rates become more equal.

wages in western European nations are still much higher than those in eastern European nations
workers that come from member countries of the European Union may travel freely and work in any country that they can and that belongs to the European Union.

As long as the wages in western European countries continue to be higher and European workers can establish themselves in those counties, the supply of workers will continue to flow from poorer eastern European countries to richer western European countries.

rise in Western European countries and fall in Eastern European countries until the wage rates become more equal.