Take a look at Germany [0]:
> By the first half of 2016, 10 percent of refugees who came to Germany during 2015, 22 percent of those who arrived in 2014, and 31 percent of those who received asylum in 2013 had found work.
> A large proportion these figures is attributed, however, to unpaid internships and minor employment. If these employment conditions aren't taken into account, only 5 percent of refugees who arrived in 2015 were in employment in the first half of 2016, 13 percent of those from 2014 and 21 percent from 2013.
From what I have seen in Germany, refuges and migrants end up in segregated areas and bring their various cultures with them, which isolates them from society at large and also makes their relationship with broader society more alien and hostile. And it is rare that you get the people who really need help as refugees. Many of them are young men without female partners, and the gender imbalance is rather shocking and probably also causes some of the issues seen in Europe today.
[0]: https://dw.com/en/study-50-percent-of-refugees-at-work-in-ge...