What visa do you need to teach English in Japan?

Two visa categories, not one

Japan doesn't have a single simple 'teacher visa.' Conversation-school and eikaiwa-style teaching typically falls under the Instructor category, while some school, university, or corporate-linked education roles fall under Specialist in Humanities/International Services. Which one applies depends on the employer and the exact nature of the work, and getting it wrong on the application can cause real delays, so this is genuinely a question to put to the hiring employer rather than guess at yourself.

Why the degree matters more here than elsewhere

Japan's immigration system checks that your degree subject has a reasonable connection to the job, which is stricter in spirit than many Southeast Asian systems. A degree in an unrelated field isn't automatically disqualifying, but it can require the employer to build a stronger case in the Certificate of Eligibility application, and some employers avoid the extra work by hiring degree-matched candidates instead. This is one of the reasons online TEFL acceptance is inconsistent here — see the dedicated guide on whether online TEFL is accepted in Japan for more on how schools weigh it alongside the degree.

The Certificate of Eligibility is filed by the employer with Japanese immigration before you do anything at an embassy. It's the slowest step in the whole chain and the one you have the least direct control over, so ask your employer for realistic timing rather than assuming it moves at the same pace as, say, a Thai or Cambodian visa.

Where things go wrong

The most common stall is a Certificate of Eligibility application that takes longer than expected, sometimes because of the degree-subject question above, sometimes purely due to immigration office workload. A second issue is candidates confusing JET Programme timelines (fixed annual cycles, often over a year of lead time from first application to placement) with private eikaiwa hiring, which is far more flexible but still runs through the same COE process. A third is teachers assuming a Working Holiday visa is a substitute for a proper work visa when taking on a full teaching contract, which usually isn't compliant.

Japan's specific rules, processing times and category boundaries do shift, and different employers describe the process slightly differently based on their own experience. Confirm the current requirements with your employer, the relevant Japanese embassy or consulate, or JET's official guidance rather than relying on any single source, including this one.