Spain's Immigration Boom: Real Gains, Real Costs

Picture a restaurant owner in Barcelona — let's call her Rosa. She runs a family place, twelve tables, open six days a week. She can't afford to raise wages because her margins are already thin enough that a bad month in February could wipe out a good one in August. But she also can't keep staff, because rents in her neighborhood have climbed so fast that the people willing to work the floor can no longer afford to live anywhere near it. Her kitchen is staffed largely by recent arrivals from Venezuela and Colombia — good workers, she'll tell you, grateful for the hours. They found her through a cousin's cousin. They're renting a flat forty minutes away by Metro because that's the only thing left in their price range.

Rosa is not a data point in Spain's immigration debate. She is Spain's immigration story — the part that doesn't show up cleanly in GDP charts.

Economists Joeri Schasfoort and Alejandro Iribas de la Puerta recently put out a detailed analysis of Spain's immigration surge, and it's worth sitting with because they do something rare: they resist the clean narrative. Spain's prime minister has argued that welcoming immigrants is "not only a duty, but a step towards guaranteeing the welfare state." Schasfoort and Iribas take that claim seriously and interrogate it honestly. What they find is a story with a real upside, a real cost, and a government that has been more willing to accept the first than pay for the second.

The surge, in plain terms

For most of the twentieth century, Spain exported people. After World War II, Spaniards headed to France, Germany, Switzerland — chasing work that wasn't available at home under Franco. By the early 1990s, immigrants made up barely one percent of Spain's population. What followed was one of the fastest demographic transformations ever recorded in a developed country: within a single decade, the immigrant share of the population climbed past eleven percent, driven by a construction and services boom that needed bodies and wasn't particular about paperwork. The government legalized arrivals in waves, just trying to keep pace.

Spain's property bubble collapsed in 2008, and the wave receded just as fast. Unemployment climbed past twenty percent and stayed there. Many immigrants left. Spain largely missed the 2015–2016 refugee crisis that shook Sweden and Germany.

But when the Spanish economy recovered, immigration came back larger than before. Three things drove it, according to Schasfoort and Iribas: a recovering labor market, Schengen visa exemptions that the previous conservative government had quietly negotiated for Colombia and Peru in 2016 (a detail worth noting, given how the current government gets most of the political credit), and genuine push factors — instability in Central America and, especially, Venezuela. Spanish economist Jesús Fernández-Huertas Moraga has estimated that the visa exemptions alone multiplied immigration to Spanish-speaking Spain by two to three times.

What it's actually doing for the pension system

Here is where Spain's prime minister has the cleaner argument. Spain has one of Europe's lowest fertility rates and a population that was on track to start shrinking. The immigrants arriving now are disproportionately working-age adults — they skipped the school years when they would have been drawing on public services rather than contributing to them. Schasfoort and Iribas describe the contribution-to-spending gap as substantial, and the Spanish government points to it regularly as evidence that immigration is paying its own way.

For the short run, this holds up. Young workers paying into a pension system that retirees are drawing from is exactly how the math is supposed to work. It buys the system time.

The problem is that "buying time" is doing a lot of heavy lifting in that sentence. Immigrants age, too. If they're working primarily low-wage jobs — agriculture, hospitality, construction — their lifetime pension contributions may not cover their eventual claims, depending on how benefits are structured. Schasfoort and Iribas point to Danish research that found low-skilled migrants from outside rich countries tend not to make the welfare state more sustainable over the long run. But they're careful not to paste that finding onto Spain directly: Denmark provides far more generous public housing and social transfers to low-income families than Spain does, which means immigrants in Denmark both contribute less and cost more than their Spanish counterparts might. The net fiscal picture for Spain could end up better than Denmark's research suggests — or it could look similar once you account for Spain's specific pension rules. Nobody has the data to say for certain yet.

What is certain: if these immigrants don't have substantially more children than native-born Spaniards (and fertility rates for recent migrants tend to converge toward the host country over time), Spain is kicking its aging problem a generation down the road, not solving it.

The labor market: honest uncertainty

On wages and jobs, Schasfoort and Iribas land in a place that I respect precisely because it's uncomfortable. Spain's unemployment rate is near historic lows — hard to argue, in that environment, that immigrants are purely displacing Spanish workers. But inflation-adjusted wages have been stagnant for two decades. Could large-scale low-skilled immigration be holding down wages in agriculture, hospitality, and construction? Possibly. Could Spain's food, eldercare, and childcare be noticeably more expensive without immigrant labor? Also possibly. The honest answer is that we don't know what the counterfactual looks like, and anyone who tells you they do is selling something.

Here's the version of this that matters if you're running a small business: labor supply in the sectors that depend most on immigrant workers — food service, building maintenance, elder care, cleaning — has stayed relatively stable. For the restaurant owner, the caterer, the small contractor, that availability has kept labor costs from spiking the way they have in countries with tighter immigration controls. That's a real, tangible benefit that rarely shows up in the headline debate.

What does show up, loudly, is the housing market.

The cost that isn't being paid

When Schasfoort and Iribas look at what Spaniards are actually worried about, immigration barely registers as the top concern. Housing does, by a significant margin. And they make an observation that deserves to be said plainly: Spain's government has increased immigration at scale while new home construction has hit historic lows. Healthcare and education spending has gone up somewhat. Pension payments have gone up more. Housing investment has barely moved.

That's a political choice with a specific set of losers: the people arriving to fill the low-wage jobs, the young Spaniards they're competing with for apartments, and — yes — small business owners watching commercial rents track residential ones upward. Rosa's restaurant didn't get more expensive to operate because immigration policy is bad. It got more expensive because the government opened the labor supply without opening the housing supply to match.

"If you do decide to encourage an immigration boom, but fail to invest in housing and infrastructure," Schasfoort concludes, "you risk a massive political backlash anyway, as people start suffering from rapidly increasing house prices and the deterioration of public services." That's not a prediction. In Spain, it's already happening.

Why it's less explosive than it looks

One thing that genuinely surprised me in this analysis: roughly sixty percent of immigrants in Spain come from Latin America, and only around twenty percent from Africa and the Middle East — down from about thirty percent a decade ago. Schasfoort and Iribas are careful not to overstate the cultural dimension, but they're also honest about what the data suggests: shared language and cultural proximity appear to lower the political temperature around immigration in ways that show up in Spanish public opinion polling. Immigration as a defining electoral issue in the UK, the US, or Italy looks very different from immigration as the fourteenth item on a Spanish voter's worry list.

That cultural overlap also has labor-market implications that rarely get discussed. When workers can navigate the informal networks of a shared language — find Rosa through a cousin's cousin, negotiate working conditions without a translator — the friction of integration is lower for everyone, including the employer. That's not an argument for closed borders or cultural homogeneity. It's just a real factor that shapes how smoothly a labor market absorbs newcomers.

What the Spain story actually teaches

Schasfoort and Iribas conclude with four points: immigration can relieve pressure from an aging population in the short run; low-skilled, low-fertility immigration isn't a permanent fix; cultural similarity reduces backlash; and failing to build housing alongside an immigration boom creates its own political crisis.

That fourth point is where I keep landing. Spain's government has been making a quiet tradeoff — keeping infrastructure investment low while expanding the labor and taxpayer base. It reads like fiscal prudence on paper. On the ground, it looks like stagnant wages, overpriced apartments, and Rosa's staff commuting forty minutes each way because that's what's left.

Opening the door without building the infrastructure to support the people who walk through it isn't a migration policy — it's a pension policy with a housing crisis attached.

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Dorothy "Dot" Williams covers small business and Main Street economics for Buzzrag. This piece is based on analysis by economists Joeri Schasfoort and Alejandro Iribas de la Puerta, published via the Money & Macro channel.