At the time of writing (September 2015), Europe is dealing with a large influx of refugees/migrants. Many are fleeing violence in Syria and elsewhere, others come from Africa and the Middle East in search of economic opportunity.
I am interested in knowing what is the current state of the art in understanding the net economic impact of these inflows for the recipient countries in North Western Europe? I am interested in impact along a wide range of dimensions, growth, employment, etc.
In particular, I am interested in evidence that allows us to account for the specific demographic and skills profiles of these migrants. Assuming that the migrants reflect the typical UK asylum seeker, some demographic information can be seen here. The majority are male, between 20 and 50. At least in the current "crisis", the majority of migrants appear to be muslim, if that is of any consequence. I was not able to find information about skills.