While migrants could help boost the labor force, there are fears among more cautious observers of the migrant crisis in Europe that many migrants arriving from the Middle East and Africa are not skilled or educated, and therefore could be burden on state's pressed public finances.
Indeed, the countries where migrants have tended to arrive, often after perilous journeys across the Mediterranean, are recession-hit Greece and Italy, which has only pulled out of a long period of no growth.
Anti-immigration groups claim that an influx of migrants will put further pressure on public services such as healthcare, housing and education systems. Others argue that net migration (immigration minus emigration) tends to offer more benefits than disadvantages with higher tax receipts from working immigrants.
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More prosperous countries in Europe, like Germany, are the most attractive to migrants but even though these countries could cope with more people to meet a demand for workers, its latest moves to close its borders show it doesn't want too many.
Interior Minister Thomas de Maiziere told German newspaper Taggespiegel on Saturday that if refugees want protection from Europe, they must accept that they cannot choose which country they live in. 'There can be no free choice of residence for refugees. That doesn't exist anywhere in the world,' he said.