Will stopping immigration cause labor shortages?

Yes, stopping immigration (especially a sudden or near-total halt) would very likely cause or worsen labor shortages in many sectors, slow overall labor force and economic growth, and fail to reliably boost native employment or wages on net—particularly amid declining native-born fertility and an aging population. Evidence from economics research, recent U.S. trends, historical episodes, and international cases supports this, though effects depend on the scale/speed of the stoppage, skill levels involved, sector, time horizon, and complementary policies (e.g., training, automation incentives, or wage adjustments). Immigrants and natives are often complements rather than pure substitutes, and immigrants also add to labor demand through consumption and entrepreneurship.[1][2]

Demographic and Macro Context

Native-born working-age populations in the U.S. (and many developed countries) have stagnated or begun shrinking due to fertility rates below replacement for decades. Immigration has been the primary driver of labor force growth. Without it, the U.S. working-age population would likely have started contracting years earlier; recent sharp drops in net migration (e.g., estimates falling toward or below zero in some 2025 analyses) raise risks of low or negative labor force growth.[3][2]

Foreign-born workers comprise roughly 18–19% of the U.S. labor force, with higher overall participation rates than natives (especially men). They are overrepresented in agriculture/forestry/fishing, construction/extraction, building/grounds cleaning, food service, production/transportation, and certain skilled trades and healthcare roles. Native-born workers dominate management/professional and sales/office jobs.[4][5]

Economists (e.g., Barclays, Fed analyses) project that near-zero net immigration, combined with aging, could slash “potential” monthly private payroll growth from ~100k+ toward tens of thousands or lower, weighing on GDP growth. Recent U.S. immigration slowdowns have already coincided with weaker job growth in immigrant-heavy sectors and reports of acute shortages (e.g., construction delays, skilled trades). Native unemployment has not clearly fallen in response; in some data it has risen while businesses struggle to fill roles.[6][7][8]

Empirical Evidence from Sudden Stops and Restrictions

Broader research finds immigration boosts firm growth/formation in tight markets, with limited or no negative wage/employment effects on natives overall (and positives via productivity and demand). Reducing unauthorized or low-skilled flows has been linked to lower employment growth in construction/manufacturing. Mass deportation scenarios project large GDP and employment hits.[8][15]

Nuances, Caveats, and Adaptations

In short, labor shortages are already emerging or projected in immigrant-reliant sectors and overall due to demographics. Abruptly stopping immigration would intensify them in the short-to-medium term, raise costs, slow growth, and not reliably “free up” jobs for natives in a one-for-one way—consistent with multiple natural experiments. Sustainable approaches typically combine selective immigration, domestic workforce development, and productivity-enhancing reforms rather than pure restriction.