The economic advantages of migrant labour have come at a social cost: while some workers migrate annually, other families are divided often for many years.

In Iowa, state demographers place the overall loss of population at nearly 100,000 since 1980, as farm families and workers migrated to find jobs elsewhere.

The expanding region will attract capital for investment and workers will migrate from the less advantaged areas.

Similarly, Washington could more aggressively address the portability of pension and health benefits as workers migrate from job to job.

After a closing, patients, workers and costs simply migrate.

When the most highly skilled workers migrate to the cities, rural poverty deepens.

When workers migrate, their early care and education generally benefit the country where they move to work.

Or, unemployment can fall as workers migrate.

He looks back to the 1940's, when black workers migrated from the South to get factory jobs.

To escape, rural workers and sharecroppers migrated north by train with hopes to work in auto plants around Detroit.