The International Monetary Fund (IMF) has issued a rare, specific recommendation regarding South Korea's labor and pension systems, urging the nation to implement a synchronized structural reform package. While the IMF agrees on the necessity of extending the retirement age, it stresses that this move must be immediately accompanied by an adjustment to the national pension eligibility age and a fundamental overhaul of the current seniority-based wage structure.

A Synchronized Reform Scenario for Sustainable Growth 

In a recent special report focused on South Korea, titled "Healthy Aging and Labor Market Participation In Korea," the IMF proposed a concrete scenario: extending the mandatory retirement age from the current 60 to 65, while simultaneously delaying the starting age for receiving the National Pension (National Pension Service, NPS) benefits to 68.

This recommendation underscores the need to address the fiscal sustainability of the public pension system alongside improving labor market participation among the elderly. Simply raising the retirement age without adjusting the pension age could place an unsustainable burden on the pension fund and the national budget.

The IMF highlighted the substantial economic benefits of this coordinated approach, citing research from the Organisation for Economic Co-operation and Development (OECD). According to the report:

"Delaying the National Pension eligibility age to 68 by 2035 would increase total employment by 14% and, assuming the productivity of the elderly is maintained, would boost Gross Domestic Product (GDP) by 12% by the year 2070."
This analysis strongly suggests that a dual strategy—keeping the aging workforce actively engaged while ensuring the solvency of the national retirement fund—is crucial for securing Korea's long-term economic vitality amidst its rapidly aging demographic crisis.

The Urgency of Wage Structure Reform 

Beyond the retirement and pension adjustments, the IMF issued a stern warning about Korea's rigid wage structure. The institution explicitly advised that any reform must include a shift away from the current seniority-based (연공서열) system towards a performance- or job-based compensation model.

The IMF's rationale is that extending the retirement age without reforming the wage structure would lead to significant unintended side effects. In a seniority-based system, wages naturally increase with age and tenure, regardless of productivity. Prolonging this costly structure would increase labor costs for companies, especially small and medium enterprises (SMEs), potentially hindering job creation for younger generations and ultimately encouraging employers to circumvent or disregard the extended retirement age.

A move to a performance-based system, where compensation is tied to the value of the job and individual output, is viewed as essential for maintaining intergenerational equity and ensuring that longer working lives are economically viable for both employees and employers.

Addressing Korea's Demographic Time Bomb 

The IMF's intervention is highly significant given that it is unusual for the organization to specifically address the mandatory retirement age of a member nation with such detailed policy prescriptions. The move reflects the global recognition that South Korea's demographic challenges—characterized by the world's lowest fertility rate and one of the fastest-aging populations—pose a substantial threat to its economic future.

The current 60-year retirement age and gradually rising NPS starting age (set to reach 65 by 2033) are increasingly mismatched with the country's rising life expectancy, which now exceeds 83 years. The IMF report serves as a critical call to action for the Korean government and the National Assembly, suggesting that piecemeal reforms will be insufficient to navigate the economic pressures posed by the aging society. A bold, integrated package of labor and pension reform is necessary to transform the burden of an aging population into a continued economic advantage.