Germany Needs 400,000 Immigrants a Year. It Also Wants Them to Leave.

It takes a particular kind of political courage to announce, in the same legislative session, that your nation requires mass immigration to survive and that mass immigration must be stopped immediately. Germany's coalition government achieved this feat in March 2026, when the Ministry of Labour published a workforce analysis projecting a need for 400,000 net immigrants annually through 2040, while the Ministry of the Interior unveiled a border enforcement plan designed to reduce arrivals by 60 percent. One is reminded of the man who, upon discovering his parachute will not open, declares himself firmly opposed to gravity.

The contradiction is not uniquely German. Across the developed world, governments have arrived at the same algebraic impossibility: the pension systems designed in the 1950s require three workers for every retiree, but the birth rates of the 2020s produce 1.4 children per woman. The gap must be filled by immigration, which must also be stopped, because voters who depend on immigrant-funded pensions have decided that immigrants are the problem. Democracy, meet demography. Someone will have to give.

The Arithmetic Nobody Wants to Discuss

The numbers are not subtle. Japan's working-age population has shrunk by 13 million since 2000. South Korea's fertility rate fell to 0.72 in 2025—the lowest ever recorded for a nation not experiencing famine or war. Italy's population is projected to fall from 59 million to 46 million by 2070, while the share over 65 rises from 24 percent to 35 percent. China, which spent decades enforcing a one-child policy, now offers cash payments for a third child and cannot persuade couples to have a second.

The pension mathematics are unforgiving. Germany's statutory retirement age is 67, life expectancy is 81, and the average retiree collects benefits for 19 years. In 1960, there were six German workers per pensioner. Today there are 2.1. By 2040, absent immigration, there will be 1.4. The system was designed as a intergenerational contract: today's workers fund today's retirees, trusting that tomorrow's workers will do the same. The contract assumed tomorrow's workers would exist.

The only variable that can be adjusted quickly is immigration. Fertility rates take decades to shift, and no pro-natalist policy in the developed world has raised birth rates above 1.8. France offers sixteen weeks of paid parental leave, subsidized childcare, and monthly payments per child; its fertility rate is 1.79. Hungary's Viktor Orbán has spent a decade on nationalist pro-natalist subsidies—cheap loans for married couples, tax exemptions for mothers of four—and the rate has risen from 1.23 to 1.51, still well below replacement. You can make it easier to have children. You cannot make people want them.

The Precedent We Prefer Not to Remember

This is not, of course, without precedent. In 1961, West Germany faced a labour shortage that threatened to stall its economic miracle. The solution was the Gastarbeiter program: guest workers, recruited from Turkey, Yugoslavia, and southern Europe, who would come temporarily, fill the factories, and leave when no longer needed. They were not immigrants. They were a workforce on loan.

Except they did not leave. By 1973, when Germany halted recruitment, 2.6 million guest workers were in the country. Many brought families. Their children were born in Germany, attended German schools, spoke German. They became, despite the fiction, Germans—though Germany did not amend its citizenship law to acknowledge this until 2000. The lesson was clear: you cannot import labour without importing people. People have children, build lives, stay. The temporary becomes permanent.

Today's politicians prefer a different lesson. In January 2026, Germany's Christian Democratic Union proposed a "controlled rotation system" for migrant workers: five-year visas, no family reunification, mandatory departure at term's end. The policy assumes workers will comply—that a nurse from the Philippines who has spent five years in Hamburg, learned German, made friends, and watched her children enter school will board a flight home because the paperwork says so. It assumes she is a unit of labour, not a person. The Gastarbeiter program made the same assumption sixty years ago.

What the Actuaries Know and the Politicians Won't Say

The pension actuaries have done the math. In 2024, the German Federal Pension Insurance authority published a projection model with three scenarios: baseline fertility (1.5 children per woman), zero immigration, and current immigration levels (net 300,000 annually). Under zero immigration, the pension contribution rate—the share of wages workers pay into the system—would need to rise from 18.6 percent to 27.4 percent by 2045 to keep benefits stable. Alternatively, benefits could be cut by 22 percent. Or the retirement age could rise to 72.

With immigration at 300,000 annually—a figure the government now says is too high—the contribution rate would still rise to 22.1 percent. To hold the rate steady would require 520,000 net immigrants per year, most of working age. No politician has proposed this. Instead, they have proposed raising the retirement age by six months (insufficient), cutting pensions for future retirees (unpopular), and reducing immigration (mathematically counterproductive). The circle cannot be squared with the tools they are willing to use.

Other nations face steeper cliffs. Spain's Social Security Reserve Fund—the buffer meant to cover shortfalls—will be depleted by 2032 without reforms. Poland's pension system ran a deficit equal to 2.1 percent of GDP in 2024. South Korea's National Pension Service projects insolvency by 2055, at which point it will be able to pay 20 percent of promised benefits. The polite term for this is "unfunded liability." The accurate term is a promise the young cannot keep.

The Countries That Chose Collapse Over Immigration

Japan offers the clearest test case. Its population peaked at 128 million in 2008 and has fallen every year since. It will drop below 100 million by 2053. The working-age population is shrinking by 600,000 annually. Entire towns in rural prefectures have no residents under fifty. Schools close for lack of children. The government has tried everything except the one policy that would work.

Japan's immigration rate remains below 2 percent of the population—half the OECD average. In 2023, it accepted 303,000 foreign workers under "technical intern" programs, a label that permits temporary labour without a path to residency. These workers pick vegetables, staff nursing homes, and fill factory shifts that Japanese citizens will not take. They are essential and unwelcome, needed and resented. After five years, most must leave. The demographic crisis continues.

South Korea has followed a similar path. Despite the lowest fertility rate on earth, it admits fewer than 50,000 permanent immigrants annually. The E-9 visa program allows temporary migrant workers in manufacturing and agriculture—135,000 were employed in 2024—but bars family reunification and offers no route to citizenship. The system treats demographic decline as preferable to ethnic diversification. It is a choice, and choices have consequences.

The Argument They Haven't Made

There is, theoretically, a case for managed demographic decline. Let the population fall, shrink the economy proportionally, accept lower GDP in exchange for higher per capita income, automate where possible, and reduce the state's obligations to match the smaller tax base. Singapore's government has modeled this: a stable population of 5 million, high productivity, selective immigration, no expectation of growth. It is coherent.

But it requires abandoning the pensions already promised. A shrinking workforce cannot fund a growing retiree population at current benefit levels. The choice is: reduce benefits, raise taxes on a smaller base, or delay retirement until people work into their mid-seventies. Japan has done all three, incrementally. It raised the pension eligibility age to 65 in 2025 and floated proposals for 68. It cut the replacement rate—the pension as a share of previous earnings—from 62 percent to 54 percent. It raised consumption taxes. None of this has been popular. All of it has been insufficient.

No European government has proposed the honest version of this policy: "We will reduce your pensions by a quarter, raise your taxes, and make you work until 70, because we have decided immigration is unacceptable." Instead, they have proposed immigration restrictions while promising to protect pensions—a combination that defies arithmetic. The voter is offered a fantasy: the benefits of the postwar social contract without the demography that funded it.

What Happens Next, Whether We Like It or Not

The demographic transition is not reversible on a policy-relevant timescale. Even if fertility rates rose to replacement tomorrow—which no developed nation has achieved in fifty years—it would take two decades for those children to enter the workforce. The pension crisis arrives in 2030. The workers who might have solved it were not born in 2005.

So governments will do what they always do when confronted with an equation that does not balance: they will fudge the numbers. Retirement ages will rise under euphemisms like "flexible pathways to retirement." Pension indexing will shift from wages to prices, a technical change that reduces payouts by stealth. Means-testing will expand, so benefits phase out for the middle class. And yes, despite the rhetoric, immigration will continue, relabeled as "skills-based" or "temporary" or "sector-specific," because hospitals need nurses and farms need labor and the economy cannot function without people to do the work.

The political class will call this pragmatism. The public will call it betrayal. The gap between what was promised and what can be delivered will widen, and someone will offer a simpler explanation: the system failed because outsiders broke it. This story has the advantage of being emotionally satisfying and the disadvantage of being economically false. But it is the story that wins elections, and so it will be told, and the policy contradictions will deepen, and the pension funds will inch closer to insolvency while politicians promise both security and borders.

One might wish for leaders willing to explain the choice plainly: accept immigration and fund the pensions, or reject immigration and cut the benefits. One might wish for voters capable of hearing it. But wishing has never been a substitute for demography, and demography does not negotiate. The math arrives whether we are ready or not.