Migration and the Economy
The Economics of Irregular Migration
Why people migrate without legal authorisation, the economic risks they face, and what research says about policies to manage irregular migration.
Irregular migration means moving to or staying in a country without legal authorisation, for example by crossing a border without permission or overstaying a visa. It is one of the most contested issues in migration policy.
Why people migrate irregularly
- Large income gaps: wages in rich countries can be many times higher than at home.
- Conflict and persecution.
- Limited legal pathways: legal visas may be scarce, slow or unavailable for lower-skilled workers.
- Family reunification.
The economics of smuggling
When legal routes are limited, a market for smuggling emerges. Migrants may pay smugglers thousands of dollars, often borrowing heavily. Journeys can be extremely dangerous, through deserts, jungles or seas. The International Organization for Migration has recorded tens of thousands of migrant deaths and disappearances on migration routes over the past decade.
Effects on migrants
Irregular migrants often face:
- Exploitation: without legal status, they may be underpaid, work in unsafe conditions and fear reporting abuse.
- Limited access to health care, education and legal protection.
- Debt bondage to smugglers or recruiters.
Effects on host countries
Irregular migrants often fill labour shortages in agriculture, construction, care and hospitality. But their lack of legal status can depress wages and conditions in those sectors and reduce tax revenue. Economists debate their fiscal effects, which depend on how much they work, pay in taxes and use services.
Policy options
- Border enforcement, which can raise smuggling prices and risks but often does not stop migration.
- Legal pathways, such as seasonal work visas, which research suggests can reduce irregular crossings. A study of the United States’ expansion of temporary farm worker visas found links to fewer irregular crossings.
- Regularisation, giving legal status to people already present. Spain regularised hundreds of thousands of migrants in 2005.
- Addressing root causes in origin countries.
A young man borrows the equivalent of several years' income to pay smugglers for a dangerous journey. After arriving, he works long hours for low wages without legal protections, sending most of his earnings to repay the debt. Legal work visas, if available, would have saved the smuggling fee, reduced the danger and given him rights at work.
Enforcement can reduce some crossings but often shifts migrants to more dangerous routes and raises smuggling prices. Legal pathways and cooperation with origin countries are also important tools.
- Irregular migration is driven by income gaps, conflict and limited legal pathways.
- Smuggling is costly and dangerous, and migrants often face exploitation.
- Irregular migrants fill labour shortages but lack protections.
- Legal pathways, regularisation and enforcement all feature in policy debates.
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