In the December Issue of Die Volkswirtschaft, Ronald Indergand and Andreas Beerli argue that increased high skilled migration into Switzerland mainly resulted from (i) higher educational attainment in the source countries and (ii) stronger demand by Swiss firms for high skilled labor.
The authors argue that the agreement between Switzerland and the European Union on the free mobility of labor (which is in force since 2002) did not contribute to an improved skill mix. Rather to the contrary, lower barriers to migration for EU citizens might have contributed to a slight reduction in the average skill of immigrants from the EU.