In the construction field there are plenty of people coming from Africa and some parts of Asia. The problems, according to my father, are first the lack of mutual comprehension language-wise, and the lack of knowledge from these workers. I won't even delve into how people are so mistreated by this big companies because that would be a whole other thing.... But I'm getting out of topic.. Ah, still on the immigrants it was almost slipping my mind that I taught Portuguese to a group of workers from Nepal just here in my village... So there is somme immigration. However I don't see these people mixing in with the locals, but how could they? Language is harder and we are harder to be friends with...