Demographic threshold

: 'Superaged' South Korea must redesign labor, welfare, growth for an irreversibly older society

South Korea did not become old in a single year. Yet every society eventually reaches the point where demographic forecasts stop describing the future and begin describing the present.

That moment arrived this week. Official 2025 census data, released Tuesday by the Ministry of Data and Statistics, showed that people aged 65 or older made up 20.7 percent of the population, formally placing Korea among the world's superaged societies.

At the same time, the working-age population fell to 69.2 percent, slipping below the 70 percent mark for the first time since comparable records began in 2015.

Those numbers are less remarkable for crossing arbitrary thresholds than for confirming something more consequential. The country is no longer approaching a demographic transition; it has completed one. The challenge is therefore no longer how to restore the population structure, but how to manage a permanently older and slower-growing society without sacrificing productivity or social cohesion.

Labor policy illustrates why old debates no longer fit today's realities. Calls to extend the mandatory retirement age beyond 60 reflect a genuine problem: Many workers leave their jobs several years before becoming eligible for the national pension.

Businesses, meanwhile, argue that retaining employees under Korea's seniority-based wage system would sharply increase labor costs while discouraging new hiring.

Treating the issue as a contest between older workers and younger job seekers, however, mistakes the symptom for the cause. The deeper constraint is a compensation system that rewards tenure more than productivity.

Without reforming wages, extending retirement could weaken hiring incentives and competitiveness alike. More flexible post-retirement reemployment, combined with a gradual shift toward job-based and performance-based pay, would offer a more sustainable compromise.

The same logic applies to pensions and welfare. Korea's old-age dependency ratio has climbed to 29.9, meaning roughly 3.3 working-age adults support one senior. The aging index has surpassed 200, leaving more than two older people for every child. Public spending on pensions, healthcare and long-term care will inevitably rise even as the tax base expands more slowly.

Incremental adjustments, such as asking workers to contribute more or modifying benefits, may delay fiscal strain but cannot resolve the underlying imbalance. Korea ultimately needs better integration of its national, basic and occupational pension systems, together with automatic adjustment mechanisms that respond to demographic change instead of electoral calendars.

Immigration and regional development require the same long-term perspective. Foreign residents now account for 4.1 percent of Korea's population, and 89.3 percent of them are of working age. Their contribution to manufacturing, agriculture and care services is already substantial.

Yet temporary labor programs cannot substitute for a shrinking domestic workforce. Korea should compete more aggressively for highly skilled professionals willing to settle permanently.

Another critical issue is the continued concentration of 50.9 percent of the population in the Seoul metropolitan area, deepening housing pressures while hollowing out regional economies. Stronger local industrial bases will matter more than larger central government transfers.

Economic adaptation extends beyond labor markets. More than 40 percent of Seoul households now consist of a single person, making housing models designed for larger families increasingly outdated.

Markets and policymakers alike must adjust to changing patterns of consumption, housing demand and elder care, while investment in AI and other productivity-enhancing technologies helps compensate for a smaller workforce.

Demographic thresholds are often described as milestones. In reality, they mark the point when institutions begin to lag behind the society they were built to serve.

Korea has entered an era that demands fewer temporary fixes and far more structural adaptation. Whether the country remains prosperous and cohesive will hinge on how successfully its labor market, pension system and broader economic architecture evolve alongside its changing population.

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