Poverty reduction policies will increasingly have to consider this demographic change and include measures to ensure that health care is kept affordable and that guaranteed pension benefits can provide a decent living for older persons. However, at best migration flows can be only a part of the response to this challenge (see United Nations, 2007). The extent to which developed societies will be willing to absorb additional large inflows of labour migrants may be limited. On the sending side, remittances bring benefits, but emigration can also lead to an increasing brain drain and shortages of skilled workers, which may limit domestic economic and social development.