Many of the new arrivals, according to employers, brought with them skills required of the building trade and found work in sectors such as construction, where jobless rates are high.

“Employers have chosen to use new immigrants over native-born workers and have continued to displace large numbers of blue-collar workers and young adults without college degrees,” said Andrew Sum, the director of the Center for Labor Market Studies.

“One of the advantages of hiring, particularly young, undocumented immigrants, is the fact that employers do not have to pay health benefits or basic payroll taxes,” said Sum.

From 2008 to 2010, 1.1 million new migrants who have entered America since 2008 landed jobs, even as U.S. household employment declined by 6.26 million over that same period.