No, not in any sustained, economy-wide sense. Markets clear through wages, participation, capital substitution, and demand shifts. Abruptly stopping immigration can create temporary, sector-specific tight spots where employers previously relied on continuous inflows of lower-wage labor, but "labor shortage" is usually employer language for "I cannot hire at the wage and conditions I prefer."
How Labor Markets Actually Work
•Supply and demand, not fixed slots: Immigration adds workers (and consumers). Halting it slows labor-force growth. Wages and prices then adjust. Higher relative wages pull natives, marginal workers, and the semi-retired into those jobs, raise labor-force participation, encourage longer hours, and make automation/offshoring more attractive. This is basic price theory, repeatedly observed.
•Shortages are rarely absolute: True quantity shortages (empty shelves with no price signal) are uncommon outside price controls or sudden shocks. Most reported "shortages" in agriculture, construction, meatpacking, hospitality, eldercare, and certain trades track heavy prior reliance on immigrant networks plus rigid wages, housing costs near jobs, certification barriers, or welfare cliffs that keep natives out.
•Composition matters more than totals: High-skilled inflows (engineers, nurses, specialists) differ from low-skilled ones. The former can ease bottlenecks in expanding sectors; the latter often compete directly with native high-school dropouts and prior immigrants, compressing wages at the bottom (see Borjas and related work). Blanket "immigration" talk obscures this.
Evidence from Restrictions and Comparisons
•Historical U.S. pauses: The 1920s–1960s national-origins limits sharply cut inflows. The economy industrialized, real wages for natives rose substantially, and participation adjusted without chronic mass shortages. Post-1965 and post-1980s surges coincided with slower wage growth for lower-skilled natives in high-immigration areas.
•COVID border effects: Reduced inflows tightened hospitality, agriculture, and construction in the U.S. and Europe. Employers raised pay, poached from each other, automated where feasible (kiosks, harvesting aids), and cut service levels. Gaps narrowed as wages moved; they did not produce economy-wide collapse.
•Low-immigration rich countries: Japan and South Korea run very low net immigration amid rapid aging and low fertility. They face tight markets in care and some trades, yet respond with robotics, higher elderly/female participation, productivity focus, and selective foreign-worker programs—not permanent empty factories. Output per worker remains high. Population decline shrinks both labor supply and demand.
•Sector patterns: U.S. agriculture and food processing have high foreign-born shares and recurrent complaints. Ending illegal and chain low-skilled flows raises costs (food prices) and speeds mechanization—exactly as theory predicts. Tech "shortages" are often bidding wars plus preference for cheaper, more flexible H-1B labor rather than absolute absence of talent.
Adjustments and Trade-offs
Wages for lower-skilled work would rise, which benefits native workers in those jobs and reduces residual unemployment/idleness. Employers in immigrant-intensive sectors lose a subsidy and must innovate, raise prices, or shrink. Housing and fiscal pressures from rapid low-skilled inflows ease. GDP level grows slower without the extra bodies, but GDP per capita and native wages can improve—especially if selection favors skills and fiscal contributors. Capital invests more in labor-saving tech when labor is dearer.
Demographics amplify the issue in low-fertility societies: without immigration or higher native births/participation, total hours worked stagnate or fall. That is a population problem first; immigration is one policy lever among automation, later retirement, and family policy. Sudden stops maximize disruption; gradual reductions plus enforcement let wages and practices adjust.
Claims of inevitable catastrophe usually come from sectors addicted to elastic low-wage supply or from models that hold wages and technology fixed. Empirically, labor markets are more elastic. For detailed labor economics, see work by George Borjas, David Card (the weaker displacement findings still show wage effects at the bottom), and analyses of the Mariel boatlift and similar supply shocks.