The people you are talking about will have to work for a longer period and so they would be settling here with their families. At that point, to what extent are we still talking about temporary work? If I have to go and work in a country and I bring my wife and children, who go to school there and can even work there in the evening, after school, I imagine I will want to be settling down and buying a house. I will probably sell my property in my home country.
I find that interesting, but is that not what defines a permanent resident? How is this consistent with the Temporary Foreign Worker Program?