"They are coming to work for low wages in terms of local cost of living, and in many cases at undesirable hours."
Sounds like the "working holidays" lots of young NZers had in London - I was going to say years ago but the daughter of a friend is over there now. They would use that as somewhere to be based whilst taking their trips/tour bus rides, around Europe.
Meanwhile, over here it's harvest season for tomatoes and the apples are not far off. Suddenly our town is full of people from Vanuatu and other Pacific islands, workers brought in because our unemployed won't do the job (for the pay and conditions offered).
(I'm not sure that I would either.)
Robyn