The issue focused on what are the problems of foreign workers in various jobs, with people who were jobless for about two years and now have to work more than 10 hours a day.

"It's not just about countries that have very high labour costs or those that have low wages. It's also about issues like education," he said.

In previous studies, researchers have found that research done by academic economists has shown that large numbers of white American students go to college over their working lives. The