In Turkey, as in other countries, refugees are often seen as an unmitigated burden, taking jobs from locals, straining public resources, and stoking fears of rising crime and terrorism. Clearly there are significant costs and risks shouldered by host countries, but there is another side to the story—the contributions made by refugees as they bring new businesses, markets, and skills to their host communities. To the extent that countries focus on an enabling business environment and a modicum of protection for refugees working illegally, the positive side of the ledger can only grow.
http://www.brookings.edu/blogs/future-development/posts/2016/03/16-syrian-businesses-turkey-karasapan