KPMG, a global tax, audit and advisory firm, does an annual survey of "Global Assignment Policies and Practices". Their 2010 survey results reveal that companies who send employees abroad are still struggling to do so. They're finding more ways of cutting the costs of those employees, including cutting benefits and finding creative ways of cutting their cost of living allowances.
That's the bad news. The good news is that corporations are sending even more people abroad as international competition requires them to do so. Which, incidentally, pretty much matches what KPMG's 2009 Global Assignment Policies and Practices survey said. More of the world is getting interconnected every day and it appears you have a greater chance than even of finding a company willing to send you overseas, but with the extreme costs involved and the global economic struggles, I think countries are going to have to reconsider the legal hurdles they put in the way of people moving abroad if they want to continue to be attractive in the international marketplace.