Military manpower shortage threatens Japan’s defence plans

Japan's ambitious military expansion is running up against a growing structural challenge: a shrinking pool of potential recruits and declining interest in military service among young people.

The issue briefly entered the political spotlight earlier this month during a parliamentary committee session, as the Geopolitical Monitor pointed out in their recent article.

An incident took place when opposition lawmaker Chikage Koga suggested that young people from lower-income households were more likely to join the Japan Self-Defense Forces (SDF), while those from wealthier families generally did not.

The remark drew swift criticism from lawmakers across the political spectrum. Defense Minister Shinjiro Koizumi described the comment as unacceptable, prompting Koga to apologize and withdraw her statement.

Despite the controversy, the debate highlighted a broader problem confronting Japan's armed forces: a persistent shortage of new recruits at a time when the country is undertaking its largest military modernization in decades.

Under Prime Minister Sanae Takaichi, Tokyo has accelerated plans to raise defense spending to 2% of GDP ahead of schedule while investing in long-range strike capabilities and expanding the operational role of the SDF in response to growing regional security concerns. China's military expansion, North Korea's missile program, and uncertainty surrounding future US security commitments have all reinforced Japan's shift toward a stronger deterrence posture.

However, expanding military capabilities also requires additional personnel.

According to government figures, the SDF met just over half of its recruitment target in fiscal year 2023—the lowest recruitment rate on record. The shortage was particularly acute among entry-level enlisted personnel, with only 3,221 recruits joining against a target of 10,628, representing just 30% of the goal.

Recruitment for non-commissioned officer positions performed somewhat better, reaching nearly 70% of its target.

According to Geopolitical Monitor, the recruitment shortfall reflects long-term demographic trends rather than a temporary setback. Since the mid-1990s, Japan's population aged 18 to 26 has declined by roughly 40%, and the number of physically eligible young adults is expected to continue shrinking for decades.

The publication describes the situation as a strategic paradox: Japan faces an increasingly challenging security environment precisely as its potential military workforce continues to contract.

Tight labor market adds pressure

Demographics are only part of the challenge, as the article notes.

Japan's exceptionally tight labor market has intensified competition for young workers. In fiscal 2023, there were 3.52 job openings for every new high school graduate entering the workforce, giving many young people attractive civilian career options.

Where military service once offered a stable path to employment and social mobility, particularly for those with limited opportunities, today's labor market often provides higher salaries, greater flexibility, and lower personal risk than a military career.

Analysts say this reflects a broader trend across advanced economies. As populations age, young workers become scarcer, increasing the opportunity cost of military service. While governments can raise defense budgets, they cannot quickly expand the pool of eligible recruits.

Japan also faces a disconnect between public attitudes and military service.

A government survey released in January 2026 found that more than 90% of respondents held favorable views of the Self-Defense Forces, making it one of the country's most respected public institutions, largely because of its disaster relief work.

Yet that positive perception has not translated into enlistment. According to a 2024 WIN/Gallup International survey, only 9% of Japanese respondents said they would be willing to fight for their country in the event of war—one of the lowest figures recorded worldwide.

Analysts say the gap reflects broader social changes seen across many affluent democracies, where younger generations increasingly prioritize individualism, work-life balance, and personal autonomy over traditional notions of national service and collective sacrifice.

By Nazrin Sadigova