Do foreigners have to pay into Japan's pension? The "opt-out" myth, agreements, and getting money back

A lot of newcomers hear "just don't sign up for the pension" as café advice. Mio reads the Japanese-language official sources and doesn't do vibes — here's what actually applies, and where you genuinely have options.

Who must enrol: employees vs self-employed/students

Japan's public pension has two layers. The National Pension (Kokumin Nenkin) covers all residents of Japan aged 20–59, regardless of nationality. The Employees' Pension Insurance (Kosei Nenkin) covers workers at companies and the public sector, and is deducted from your salary (your employer pays a share too).

Being enrolled in Kosei Nenkin means you're also covered for the National Pension layer at the same time — you're not paying both separately.

Why you can't just "opt out"

Coverage is based on residency and work status, not on whether you choose to sign up. Because the National Pension covers all residents 20–59 and the Employees' Pension covers workers, there is no general "I'd rather not participate" switch for a foreign resident. Ignoring it doesn't make it optional — unpaid National Pension contributions can be pursued, and gaps can matter later (including for some visa-related checks). The correct move when money is tight is to apply for an exemption, not to disappear.

Exemptions (application-based, not automatic)

If paying is hard, these exist — but you have to apply at your city/ward office; they don't switch on by themselves.

• Student payment special exception (学生納付特例) — for enrolled students; it postpones (defers) National Pension payments while you study, so you're not treated as a non-payer.
• Low-income exemption (免除) — if income is low, you may qualify for full, three-quarter, half, or one-quarter exemption, depending on your circumstances.

These affect how much benefit those months count toward later, so read the specifics before applying — verify the current rules and your eligibility with the Japan Pension Service.

Social-security agreements: so you don't lose your contributions

If your home country has a social-security agreement (also called a totalization agreement) with Japan, two things can help, per the Japan Pension Service:

• Elimination of dual coverage — to avoid a "dual burden of contribution payments," the agreement arranges which country's system covers you (often relevant for people sent on temporary assignments, so you're not paying into two systems at once).
• Totalization of coverage periods — you can "totalize" your Japan and home-country periods to fill a gap, so time in Japan can help you qualify for a pension back home instead of being wasted.

As of 2025 the Japan Pension Service lists agreements in force with 23 countries (including the US, UK, Germany, France, Canada, Australia, Korea, China, India and others), with details differing by country — some totalize periods, some only prevent double coverage. Check your specific country's agreement on the official page below.

Getting money back when you leave: the lump-sum withdrawal

If you paid in but leave Japan, you may claim the lump-sum withdrawal payment (dattai ichijikin, 脱退一時金). In general terms you need a minimum contribution period, must no longer have a Japanese address, and must claim within a time limit after leaving — and importantly, taking the lump sum erases those Japanese pension periods (so you can't later use them, e.g. via totalization). Whether the refund or keeping your record is better depends on your country and plans.

→ Read Mio's dedicated guide to claiming the pension refund (dattai ichijikin)

Mio's verdict

You're in the system — plan around it, don't hide from it. Enrol as required, apply for an exemption if money's tight (student or low-income), check whether your country's agreement lets you count these years back home, and when you leave, weigh the lump-sum refund against keeping your record. Then plug it into the bigger picture: see the full arrival & admin checklist →