migrants

A migrant worker is a person who migrates within a home country or outside it to pursue work. Migrant workers usually do not have the intention to stay permanently in the country or region in which they work.

Migrant workers who work outside their home country are also called foreign workers. They may also be called expatriates or guest workers, especially when they have been sent for or invited to work in the host country before leaving the home country.
The International Labour Organization estimated in 2019 that there were 169 million international migrants worldwide. Some countries have millions of migrant workers. Some migrant workers are undocumented immigrants or slaves.

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