What Japanese immigration law actually requires
For the standard work visa route used by ALTs and eikaiwa (private conversation school) teachers, Japanese immigration law requires a bachelor's degree — the subject doesn't have to be education or English, any degree qualifies. There's no legal TEFL requirement and no nationality restriction, since the visa is tied to the degree and the sponsoring employer's Certificate of Eligibility filing.
A background declaration is part of the visa application, but Japan doesn't uniformly demand a formal apostilled criminal record check the way China does; requirements can vary by employer and by which visa category you're using.
Your certificate is the requirement you control fastest — see which TEFL course Japan employers accept.
Paperwork is where most delays happen; the full list is in our guide to Japan work visa requirements.
