A new study shows that migrant workers have suffered most in the aftermath of the global recession.
In the decades ahead there is likely to be a good deal more pressure arising from forced migration from those areas of the world that are already suffering.
Millions of migrants face exploitative work conditions, arbitrary arrests, sexual violence and other violations.
Immigrant populations in many OECD countries are feeling the full force of the economic downturn, with employers more reluctant to hire immigrants and more ready to fire them.
For tens of millions of migrants working outside their homelands, the global economic crisis is making life much more precarious.
Migration - with millions on the move worldwide, the UN has called for a concerted international effort to better understand and deal with the causes, scale and complexity of global displacement.