Root Industry Training Colleges: Korea's Other Door Into E-7-4

5 min read

If you're on a D-2 student visa at one of eleven specific Korean colleges, studying casting, welding, mold-making or three other trades the government calls "root industries," there's a door into a long-term work visa that has nothing to do with points, income brackets, or a Korean score climbing toward 120 out of 300. It runs on a skill test instead — held twice a year by a government-funded research institute — with a job offer waiting on the other side of it.

This is the 뿌리산업 외국인 기술인력 양성대학 program: Root Industry Foreign Technical Workforce Training Colleges. It has nothing to do with the K-Point E74 system we've written about separately — that one is for people already working on E-9, E-10 or H-2 visas. This track is for international students, and it's been running in some form since 2014.

  • 11Colleges currently designated for the program, per the Ministry of Trade, Industry and Energy
  • TOPIK 2 / KIIP 2Minimum Korean level needed just to apply
  • 60 / 100Combined score needed to pass skill verification, with a 40% floor on each half

What counts as a "root industry"

Korea's root-industry law names six foundational manufacturing trades — casting, mold and die making, metal forming, welding, surface treatment and heat treatment — the processes behind almost every finished metal part, from a car panel to a phone casing. The sector has a chronic labor shortage, which is the entire reason this program exists.

The eleven currently designated colleges, per the Ministry of Trade, Industry and Energy's most recent notice, are Gyeonggi Institute of Science and Technology, Bucheon University, Seojeong University, Ajou Motor College, Chungbuk Health and Science University, Geoje University, Keimyung College University, Kunjang University, Jeonju Vision University, Yeungnam University College and Chosun College of Science and Technology. Each runs a two-year associate-degree track built around one or more of the six trades — Gyeonggi Institute of Science and Technology's program, for example, centers on surface finishing and plating.

How a root-industry training college graduate converts to E-7-4: register as a root-industry student and study for two years, pass a skill verification exam combining document review, an interview and a hands-on test, then apply to convert status to E-7-4 — but a root-industry employer still has to hire you first Study & register Enroll as a root- industry student Pass the skill test Document review, interview, hands-on test Apply to convert Status to E-7-4 with a job lined up A root-industry employer still has to hire you Passing the test is necessary, not sufficient on its own
Passing skill verification opens the door to E-7-4 — it doesn't walk you through it. A job offer and your local immigration office's sign-off still come after.

Getting onto the track — and staying on it

The detail that trips people up: you have to be registered as a "root student" (뿌리학생) inside your college's root-industry department from the time you're admitted. Switching onto the track partway through, or studying something related without that registration, doesn't count — the application form requires your university's own program office to confirm it directly, not just your major on a transcript.

From there, the rest is paperwork and a test. Your college opens an application window on the national center's system twice a year — the most recent one ran June 15–26, 2026, for students graduating that August (D-2 status) or who'd already graduated (D-10 status).

The test itself

Interview — 50 points

30 for how well you know your trade in theory and can explain it in Korean, 20 for attitude toward the job and general character.

Hands-on evaluation — 50 points

30 for whether you can actually apply your trade's technique on the shop floor, 20 for how deep your technical understanding runs.

You need at least 40% of each half on its own, plus 60 points combined — so a strong interview can't carry a weak bench test, or the other way around.

  • ₩500,000Standard exam fee, charged once you clear document screening
  • ₩400,000Fee if you hold TOPIK level 4 or KIIP stage 4
  • ₩300,000Fee if you hold TOPIK level 5–6 or KIIP stage 5
Passing the test isn't the finish line The notice says it plainly: a skill-verification certificate is one of several conditions for changing your status to E-7-4, not a guarantee of it. You still need a root-industry employer to hire you, and your local immigration office still has the final say. Submitted documents aren't returned, and a false claim anywhere in the application cancels a pass after the fact — even one already confirmed.

What Soo House sees

Soo House is the community platform we run for expats and foreign residents across Korea — event listings, paid creator campaigns, and free skill workshops that help people figure out their next move. Among the student members we hear from on Soo House, the most common mix-up with this program isn't the test itself — it's assuming any international student at a "root industry college" qualifies. The registration has to happen at admission, inside a specific department, and only eleven schools carry the designation at all. A friend at the same university studying something adjacent, even in a related field, isn't automatically on this track.

Your next hop: if you're already registered as a root-industry student and nearing graduation, track down the next verification window directly through your department office — the national center runs these roughly twice a year, and the exact dates move between cycles.

Checked in November 2026 against the Ministry of Trade, Industry and Energy's Notice No. 2026-428 ("2026년 외국인 숙련기능인력 비자(E-7-4) 전환 관련 뿌리산업 분야 외국인유학생 하반기 기량검증 계획 공고," June 15, 2026, published on motir.go.kr), which lists the eleven designated colleges, the TOPIK/KIIP eligibility floor, the 100-point scoring breakdown and pass threshold, and the exam fee schedule. The six root-industry trades (casting, mold and die making, metal forming, welding, surface treatment, heat treatment) are named on the notice's own application form. Program background confirmed against Gyeonggi Institute of Science and Technology's own program page for its root-industry track. For the points-based E-7-4 route most workers use instead, see our E-7-4 guide; for how TOPIK and KIIP levels actually work, see our guide to Korea's Social Integration Program. Confirm your own college's current application window and required documents directly with the Korea Institute of Industrial Technology's National Root Industry Promotion Center (02-2183-1636) before applying — designated colleges and schedules can change between cycles.

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