South Korea’s journey to becoming the country with the world’s lowest fertility rate is the result of a complex interplay of social, cultural, economic, and political factors that have accumulated over decades. The challenges faced by women, the immense costs of raising children, the decline in marriage rates, and the legacy of past population control policies have all converged to create a demographic crisis that is proving extremely difficult to reverse.

One of the most significant drivers is the “motherhood penalty.” South Korean women are highly educated and participate in the workforce at rates comparable to men before marriage. However, once they marry and have children, the majority leave their jobs. Only about half of mothers remain employed, one of the lowest rates among developed nations. The country’s notoriously long working hours, coupled with workplace discrimination, make balancing career and motherhood nearly impossible. Many women face explicit pressure from employers not to have children, with some even forced to sign contracts promising resignation upon marriage or pregnancy. As a result, women who do have children suffer steep income losses—on average, a 66% decline by the time their child reaches ten years old, far higher than in other advanced economies. For women, the economic and professional costs of motherhood are staggering.

Equally daunting are the financial burdens of raising children. South Korea has the highest child-rearing costs in the world, averaging $275,000 per child from birth to age 18. This figure is nearly eight times the country’s per capita GDP, far higher than in the United States or Europe. Education is the most punishing expense. Nearly 80% of children attend private tutoring or cram schools, with families spending billions annually on supplementary education. Even preschoolers are enrolled in competitive programs, and high school students endure what is often described as “exam hell” in pursuit of admission to the elite SKY universities—Seoul National, Korea, and Yonsei—which admit only about 1% of applicants. This relentless competition consumes both family finances and children’s childhoods, creating a system where having more than one child is seen as financially ruinous for all but the wealthiest families.

Marriage itself has become less common, further depressing fertility. Gender relations in South Korea are fraught, with deep divisions between men and women. The #MeToo movement initially gained traction but later fueled backlash among young men, many of whom now see themselves as victims of gender discrimination. A skewed sex ratio, the result of decades of son preference and selective abortion, has left many men struggling to find partners. Meanwhile, women are marrying later or not at all, with the majority of women in their early thirties remaining single. Since only 3% of children are born outside of marriage, the decline in marriage rates directly translates into fewer births. Cultural conservatism around family structures amplifies the demographic impact of these trends.

The roots of the crisis stretch back to aggressive government-led population control policies in the 1960s and 1970s. At the time, South Korea’s fertility rate was six children per woman, and the government sought to reduce family size to fuel economic growth. Campaigns promoted contraception, sterilization, and slogans such as “two children are too many.” These measures were remarkably effective, cutting fertility in half within two decades. Yet once fertility fell below replacement levels in the 1980s, reversing the trend proved nearly impossible. The demographic momentum of declining births, combined with rising life expectancy, created a rapidly aging society. By the 1990s, South Korea was already grappling with shrinking numbers of children and a growing elderly population, a trajectory that has only accelerated since.

In recent years, the government has attempted to reverse the decline with generous subsidies and incentives. Parents now receive thousands of dollars in cash benefits, monthly allowances for young children, and extended support until school age. These measures have produced modest results, with fertility ticking upward slightly in 2024. Evidence suggests that cash incentives do encourage births, particularly for second and third children. However, the scale of the problem dwarfs the impact of these policies. To maintain current support ratios for the elderly, fertility would need to rise to levels that are practically impossible—over four children per woman, or even ten in extreme scenarios. With fewer than one-third of young unmarried Koreans expressing a desire for children, the cultural and economic barriers remain overwhelming.

The South Korean case illustrates how demographic decline, once entrenched, becomes extraordinarily difficult to reverse. The combination of punishing motherhood penalties, exorbitant child-rearing costs, declining marriage rates, entrenched gender divides, and the long shadow of past population control policies has created a perfect storm. While subsidies and reforms may slow the pace of decline, they cannot undo decades of structural and cultural forces. The country’s experience serves as a warning to other nations: once fertility falls too low, even aggressive interventions may not be enough to restore balance. The challenge is not simply financial but deeply embedded in social norms, workplace structures, and cultural expectations, making it one of the most intractable demographic crises in the modern world.

Title: The Demographic Crisis of South Korea: How Fertility Fell to the World’s Lowest