D-4 — general trainee

What D-4 covers

D-4-1 is Korean language study at a university-attached language institute. D-4-6 covers other non-degree training at approved institutions. Neither is a degree programme — that is D-2.

Almost everyone who arrives to learn Korean does so on D-4-1, typically enrolling in a university language programme running four ten-week terms a year.

Requirements

• A certificate of enrolment from the language institute.
• High school diploma or above.
• A bank balance certificate — commonly around USD 9,000, though institutions vary.
• Tuberculosis screening for nationals of designated countries.

Language institutes handle the visa issuance confirmation for their students as a matter of routine. If an institute seems vague about the process, that is worth noticing: institutions with poor visa-compliance records are placed on restricted lists, and studying at one complicates everything.

Working on a D-4

Permitted, but only after six months of enrolment and only with a permit from your immigration office. Hours are capped and depend on your Korean level. The six-month rule is firm; there is no early exception for financial hardship.

Plan your finances on the assumption you cannot work for the first half-year, because you cannot.

Attendance

Language institutes report attendance, and the thresholds are stricter than most students expect — substantially higher than a typical university course. Falling below it is reported and can end your status. Institutes also usually require a minimum attendance rate to issue the enrolment certificate you need for your extension, which means the consequence arrives twice.

Renewal and the two-year practical limit

D-4 is granted in six-month or one-year blocks and extended term by term. In practice most institutes and immigration offices expect visible progress — a student still in level 1 after two years is a problem, not a quirk.

The thing to understand before you commit

D-4 time generally does not count towards the residence period required for F-2 or F-5. Nor does it earn the F-2-7 degree bonus, because a language course is not a degree.

This is not a reason to avoid D-4 — learning Korean properly is one of the highest-return things a long-term resident can do, and TOPIK is worth up to twenty F-2-7 points on its own. It is a reason to be clear-eyed about what the year buys you: language ability and a route into a degree programme, not progress towards permanent residence.

Where D-4 leads

• D-2 — the intended destination for most students. Korean universities generally require TOPIK level 3 or above for undergraduate admission, and language study is how you get there.
• D-10 — possible for holders of a degree earned elsewhere, once your Korean is strong enough to be employable.
• E-7 — directly, if you find a sponsoring employer and hold the qualifications for the code.

Common pitfalls

• Working before the six-month mark or without a permit.
• Enrolling at an institute on a restricted list without checking.
• Assuming D-4 time counts towards long-term residence. It generally does not.
• Missing the 14-day address change report after moving — students move constantly and this is the most-missed obligation in the whole system.