{"id":318,"date":"2026-07-04T11:22:24","date_gmt":"2026-07-04T11:22:24","guid":{"rendered":"https:\/\/gokoreastudy.com\/?post_type=visa-guides&#038;p=318"},"modified":"2026-07-04T11:45:37","modified_gmt":"2026-07-04T11:45:37","slug":"e-4","status":"publish","type":"visa-guides","link":"https:\/\/gokoreastudy.com\/ko\/visa-guides\/e-4\/","title":{"rendered":"E-4 Technical Instruction (Technology Transfer)"},"content":{"rendered":"\n<!-- visa-guides:e-4 \u2014 generated by build-visa-html.mjs v2 (visa-guides.csv). \uc218\uc815\uc740 CSV\uc5d0\uc11c. -->\n<style>body.single-visa-guides .entry-header, body.single-visa-guides .entry-meta, body.single-visa-guides .ast-single-entry-banner, body.single-visa-guides [class*=\"ast-single-post-banner\"], body.single-visa-guides .post-navigation, body.single-visa-guides .ast-single-post-navigation-wrapper{ display:none !important; } body.single-visa-guides #content, body.single-visa-guides #primary, body.single-visa-guides .site-content, body.single-visa-guides .site-content > .ast-container, body.single-visa-guides .content-area, body.single-visa-guides .site-main, body.single-visa-guides .ast-article-single, body.single-visa-guides .entry-content{ padding:0 !important; margin:0 !important; max-width:100% !important; } body.single-visa-guides .ast-article-single{ background:transparent !important; border:none !important; box-shadow:none !important; } body.single-visa-guides .entry-content > p:empty{ display:none; } @import url(\"https:\/\/cdn.jsdelivr.net\/gh\/orioncactus\/pretendard@v1.3.9\/dist\/web\/variable\/pretendardvariable-dynamic-subset.min.css\"); .gk2{ --navy:#1D2A44; --navy-h:#2A3B5C; --red:#C60C30; --red-h:#A80A28; --base:#F8FAFC; --card:#FFFFFF; --border:#E2E8F0; --muted:#64748B; --tint:#EEF2F8; --on-brand-muted:#AEB8C9; --page:#DCE3EB; --r:16px; --r-lg:24px; --maxw:1120px; --shadow:0 1px 2px rgba(16,28,51,.04), 0 12px 28px -12px rgba(16,28,51,.18); --shadow-lg:0 24px 60px -20px rgba(16,28,51,.35); background:var(--page); color:var(--navy); line-height:1.6; font-family:\"Pretendard Variable\",Pretendard,-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,\"Noto Sans KR\",sans-serif; padding:18px; -webkit-font-smoothing:antialiased; width:auto; margin-left:calc(50% - 50vw); margin-right:calc(50% - 50vw); overflow-x:clip; } .gk2 *{ box-sizing:border-box; } .gk2 img{ display:block; max-width:100%; } .gk2 a{ color:inherit; text-decoration:none; } .gk2 h1, .gk2 h2, .gk2 h3{ line-height:1.2; margin:0; letter-spacing:-.02em; } .gk2 p{ margin:0; } .gk2-surface{ background:#fff; border-radius:28px; box-shadow:var(--shadow-lg); overflow:hidden; max-width:1200px; margin:0 auto; } .gk2 .seal{ display:inline-flex; align-items:center; justify-content:center; width:30px; height:30px; border-radius:8px; background:var(--red); color:#fff; font-weight:800; font-size:13px; box-shadow:inset 0 0 0 2px rgba(255,255,255,.35); transform:rotate(-4deg); flex:none; } .gk2 .eyebrow{ display:inline-flex; align-items:center; gap:9px; font-size:.78rem; font-weight:800; letter-spacing:.14em; text-transform:uppercase; color:var(--red); margin-bottom:16px; } .gk2 .eyebrow .seal{ width:22px; height:22px; font-size:10px; border-radius:6px; } .gk2 .btn{ display:inline-flex; align-items:center; gap:8px; font-weight:700; border-radius:999px; padding:11px 20px; cursor:pointer; border:1px solid transparent; transition:transform .12s, background .15s, box-shadow .15s; font-size:.95rem; } .gk2 .btn:hover{ transform:translateY(-1px); } .gk2 .btn--red{ background:var(--red); color:#fff; } .gk2 .btn--red:hover{ background:var(--red-h); } .gk2 .btn--navy{ background:var(--navy); color:#fff; } .gk2 .btn--navy:hover{ background:var(--navy-h); } .gk2 .btn--ghost{ background:rgba(255,255,255,.12); color:#fff; border-color:rgba(255,255,255,.45); } .gk2 .btn--ghost:hover{ background:rgba(255,255,255,.2); } .gk2 .btn--white{ background:#fff; color:var(--navy); } .gk2 .btn--white:hover{ box-shadow:var(--shadow); } .gk2 .btn--outline{ background:#fff; color:var(--navy); border-color:var(--border); } .gk2 .btn--outline:hover{ border-color:var(--navy); } .gk2 .hero{ padding:18px; } .gk2 .hero__frame{ position:relative; border-radius:var(--r-lg); overflow:hidden; min-height:460px; display:flex; } .gk2 .hero__img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; background:var(--navy); } .gk2 .hero__frame::after{ content:\"\"; position:absolute; inset:0; background:linear-gradient(105deg, rgba(13,21,40,.82) 0%, rgba(13,21,40,.45) 42%, rgba(13,21,40,.12) 70%, rgba(13,21,40,.05) 100%); } .gk2 .hero__glyph{ position:absolute; right:2%; bottom:-8%; font-size:min(34vw,420px); font-weight:900; line-height:.8; color:transparent; -webkit-text-stroke:2px rgba(255,255,255,.22); text-stroke:2px rgba(255,255,255,.22); pointer-events:none; z-index:1; user-select:none; } .gk2 .hero__content{ position:relative; z-index:2; align-self:center; padding:48px 8% 48px 7%; max-width:660px; color:#fff; } .gk2 .hero__kicker{ display:inline-flex; align-items:center; gap:9px; font-weight:700; font-size:.82rem; letter-spacing:.12em; text-transform:uppercase; color:#fff; background:rgba(255,255,255,.14); border:1px solid rgba(255,255,255,.25); padding:7px 14px; border-radius:999px; margin-bottom:20px; } .gk2 .hero h1{ font-size:clamp(2.4rem,5.2vw,4rem); font-weight:900; color:#fff; letter-spacing:-.03em; } .gk2 .hero h1 .accent{ position:relative; white-space:nowrap; } .gk2 .hero h1 .accent::after{ content:\"\"; position:absolute; left:0; right:0; bottom:.08em; height:.16em; background:var(--red); border-radius:3px; z-index:-1; } .gk2 .hero__sub{ margin:18px 0 28px; font-size:1.12rem; color:#E6EAF2; max-width:30em; } .gk2 .hero__cta{ display:flex; gap:12px; flex-wrap:wrap; } .gk2 .hero__trust{ margin-top:22px; font-size:.86rem; color:var(--on-brand-muted); display:flex; align-items:center; gap:8px; } .gk2 .subhero{ padding:18px; } .gk2 .subhero__frame{ position:relative; border-radius:var(--r-lg); overflow:hidden; min-height:330px; display:flex; align-items:center; justify-content:center; text-align:center; } .gk2 .subhero__img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; background:var(--navy); } .gk2 .subhero__frame::after{ content:\"\"; position:absolute; inset:0; background:linear-gradient(180deg, rgba(13,21,40,.55), rgba(13,21,40,.78)); } .gk2 .subhero__in{ position:relative; z-index:2; color:#fff; max-width:880px; padding:46px 28px; } .gk2 .subhero h1{ font-size:clamp(1.65rem,3vw,2.4rem); line-height:1.22; font-weight:900; color:#fff; letter-spacing:-.03em; } .gk2 .subhero__sub{ color:#E6EAF2; margin-top:14px; font-size:1.08rem; } .gk2 .subhero__cta{ margin-top:24px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap; } .gk2 .subhero .eyebrow{ color:#fff; justify-content:center; } .gk2 .section{ padding:56px clamp(20px,5vw,64px); } .gk2 .section--tight{ padding-top:0; } .gk2 .prose{ max-width:760px; margin:0 auto; } .gk2 .prose h2{ font-size:clamp(1.4rem,2.4vw,1.8rem); margin:1.4em 0 .4em; } .gk2 .prose h2:first-child{ margin-top:0; } .gk2 .prose h3{ font-size:1.12rem; margin:1.2em 0 .3em; } .gk2 .prose p{ color:var(--navy); margin-bottom:1em; } .gk2 .prose ul{ padding-left:1.2em; margin:0 0 1em; } .gk2 .prose li{ margin:.35em 0; color:var(--navy); } .gk2 .lead{ font-size:1.08rem; color:var(--muted); } .gk2 .center{ text-align:center; } .gk2 .sec-head{ text-align:center; max-width:640px; margin:0 auto 32px; } .gk2 .sec-head h2{ font-size:clamp(1.5rem,2.8vw,2.1rem); } .gk2 .sec-head p{ color:var(--muted); margin-top:10px; } .gk2 .note{ background:#fff; border:1px solid var(--border); border-left:4px solid var(--red); border-radius:10px; padding:16px 20px; margin:0 auto 28px; max-width:760px; font-size:.96rem; } .gk2 .cardgrid{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; max-width:980px; margin:0 auto; } .gk2 .cardgrid--2{ grid-template-columns:repeat(2,1fr); } .gk2 .cardgrid--4{ grid-template-columns:repeat(4,1fr); } .gk2 .infocard{ background:#fff; border:1px solid var(--border); border-radius:var(--r); padding:24px; transition:transform .15s, box-shadow .15s; } .gk2 .infocard:hover{ transform:translateY(-3px); box-shadow:var(--shadow); } .gk2 .infocard h3{ font-size:1.08rem; margin-bottom:7px; } .gk2 .infocard p{ color:var(--muted); font-size:.92rem; } .gk2 .infocard a.link{ color:var(--red); font-weight:700; font-size:.92rem; display:inline-block; margin-top:12px; } .gk2 .infocard .soon{ display:inline-block; margin-top:12px; font-size:.82rem; font-weight:700; color:var(--muted); background:var(--tint); padding:3px 10px; border-radius:999px; } .gk2 .infocard__ic{ width:42px; height:42px; border-radius:12px; background:var(--navy); color:#fff; display:flex; align-items:center; justify-content:center; margin-bottom:14px; } .gk2 .infocard__ic svg{ width:21px; height:21px; } .gk2 .why{ display:grid; grid-template-columns:1.05fr .95fr; gap:48px; padding:64px clamp(20px,6vw,8%) 56px; align-items:center; } .gk2 .why h2{ font-size:clamp(1.5rem,2.6vw,2rem); } .gk2 .why p.lead{ margin:16px 0 22px; } .gk2 .socials{ display:flex; gap:10px; } .gk2 .socials a{ width:40px; height:40px; border-radius:50%; background:var(--tint); display:flex; align-items:center; justify-content:center; color:var(--navy); transition:background .15s,color .15s; } .gk2 .socials a:hover{ background:var(--navy); color:#fff; } .gk2 .featstack{ display:grid; gap:14px; } .gk2 .feat{ display:flex; gap:16px; padding:18px 20px; background:var(--tint); border:1px solid var(--border); border-radius:var(--r); transition:transform .15s, box-shadow .15s; } .gk2 .feat:hover{ transform:translateY(-2px); box-shadow:var(--shadow); } .gk2 .feat__ic{ width:44px; height:44px; flex:none; border-radius:12px; background:var(--navy); color:#fff; display:flex; align-items:center; justify-content:center; } .gk2 .feat__ic svg{ width:22px; height:22px; } .gk2 .feat h3{ font-size:1.02rem; margin-bottom:4px; } .gk2 .feat p{ font-size:.9rem; color:var(--muted); } .gk2 .stats{ display:flex; justify-content:center; gap:64px; flex-wrap:wrap; padding:8px 8% 56px; } .gk2 .stat{ text-align:center; } .gk2 .stat__ic{ width:52px; height:52px; margin:0 auto 12px; border-radius:50%; background:#fff; border:1px solid var(--border); display:flex; align-items:center; justify-content:center; color:var(--red); box-shadow:var(--shadow); } .gk2 .stat__ic svg{ width:24px; height:24px; } .gk2 .stat b{ font-size:1.7rem; font-weight:900; display:block; letter-spacing:-.02em; } .gk2 .stat span{ font-size:.85rem; color:var(--muted); } .gk2 .panel{ margin:0 18px 18px; background:var(--tint); border-radius:var(--r-lg); padding:40px clamp(20px,4vw,44px); } .gk2 .panel__head{ display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:26px; } .gk2 .panel__head h2{ font-size:clamp(1.5rem,2.6vw,2rem); } .gk2 .panel__head p{ color:var(--muted); max-width:34em; margin-top:8px; font-size:.98rem; } .gk2 .uni-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; } .gk2 .uni{ position:relative; border-radius:var(--r); overflow:hidden; min-height:300px; display:flex; align-items:flex-end; color:#fff; box-shadow:var(--shadow); transition:transform .18s, box-shadow .18s; } .gk2 .uni:hover{ transform:translateY(-4px); box-shadow:var(--shadow-lg); } .gk2 .uni img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; background:var(--navy); z-index:0; } .gk2 .uni::after{ content:\"\"; position:absolute; inset:0; background:linear-gradient(to top, rgba(13,21,40,.92) 6%, rgba(13,21,40,.4) 46%, rgba(13,21,40,.05) 78%); z-index:1; } .gk2 .uni__body{ position:relative; z-index:2; padding:16px; width:100%; } .gk2 .uni__badge{ position:absolute; top:14px; left:14px; z-index:2; background:rgba(255,255,255,.92); color:var(--navy); font-weight:800; font-size:.74rem; padding:5px 10px; border-radius:999px; box-shadow:var(--shadow); } .gk2 .uni h3{ font-size:1.04rem; color:#fff; } .gk2 .uni__loc{ font-size:.82rem; color:#E6EAF2; margin-top:3px; } .gk2 .uni__tags{ display:flex; gap:6px; flex-wrap:wrap; margin-top:11px; } .gk2 .tag{ font-size:.7rem; font-weight:700; padding:4px 9px; border-radius:999px; background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.28); } .gk2 .tag--red{ background:var(--red); border-color:var(--red); } .gk2 .panel__foot{ display:flex; align-items:center; justify-content:space-between; margin-top:24px; } .gk2 .carousel-nav{ display:flex; gap:10px; } .gk2 .carousel-nav button{ width:42px; height:42px; border-radius:50%; border:1px solid var(--border); background:#fff; color:var(--navy); cursor:pointer; font-size:1.1rem; transition:background .15s,color .15s; } .gk2 .carousel-nav button:hover{ background:var(--navy); color:#fff; } .gk2 .guides{ display:grid; grid-template-columns:1.15fr 1fr 1fr; gap:18px; padding:8px 18px 56px; } .gk2 .gcard{ border-radius:var(--r-lg); overflow:hidden; min-height:300px; display:flex; } .gk2 .gcard--navy{ background:var(--navy); color:#fff; flex-direction:column; justify-content:space-between; padding:30px; } .gk2 .gcard--navy h2{ color:#fff; font-size:1.5rem; } .gk2 .gcard--navy p{ color:var(--on-brand-muted); margin:12px 0 0; font-size:.96rem; } .gk2 .gcard--img{ position:relative; align-items:flex-end; color:#fff; box-shadow:var(--shadow); transition:transform .18s; } .gk2 .gcard--img:hover{ transform:translateY(-4px); } .gk2 .gcard--img img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; background:var(--navy); z-index:0; } .gk2 .gcard--img::after{ content:\"\"; position:absolute; inset:0; background:linear-gradient(to top, rgba(13,21,40,.92), rgba(13,21,40,.2) 60%, rgba(13,21,40,0)); z-index:1; } .gk2 .gcard__body{ position:relative; z-index:2; padding:22px; } .gk2 .gcard__ic{ position:absolute; top:16px; left:16px; z-index:2; width:40px; height:40px; border-radius:50%; background:rgba(255,255,255,.92); color:var(--red); display:flex; align-items:center; justify-content:center; } .gk2 .gcard__ic svg{ width:20px; height:20px; } .gk2 .gcard--img h3{ color:#fff; font-size:1.12rem; } .gk2 .gcard--img p{ color:#E6EAF2; font-size:.88rem; margin-top:6px; } .gk2 .steps{ padding:8px 8% 60px; text-align:center; } .gk2 .steps h2{ font-size:clamp(1.5rem,2.6vw,2rem); margin-bottom:8px; } .gk2 .steps>p{ color:var(--muted); margin-bottom:36px; } .gk2 .steprow{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; } .gk2 .step{ text-align:left; padding:26px 24px; background:#fff; border:1px solid var(--border); border-radius:var(--r); } .gk2 .step__n{ font-size:2.4rem; font-weight:900; color:var(--tint); line-height:1; letter-spacing:-.04em; } .gk2 .step__n b{ color:var(--red); } .gk2 .step h3{ font-size:1.1rem; margin:6px 0 8px; } .gk2 .step p{ color:var(--muted); font-size:.92rem; } .gk2 .ctaband{ margin:0 18px 18px; border-radius:var(--r-lg); background:var(--red); color:#fff; padding:54px 8%; text-align:center; position:relative; overflow:hidden; } .gk2 .ctaband::before{ content:\"\u5370\"; position:absolute; right:4%; top:50%; transform:translateY(-50%) rotate(-6deg); font-size:13rem; font-weight:900; color:rgba(255,255,255,.08); pointer-events:none; } .gk2 .ctaband h2{ color:#fff; font-size:clamp(1.5rem,3vw,2.1rem); position:relative; } .gk2 .ctaband p{ color:rgba(255,255,255,.9); margin:14px auto 26px; max-width:34em; position:relative; } .gk2 .ctaband .btn{ position:relative; } .gk2 .formslot{ max-width:520px; margin:0 auto; } @media (max-width:980px){ .gk2 .why{ grid-template-columns:1fr; gap:32px; } .gk2 .uni-grid, .gk2 .cardgrid--4{ grid-template-columns:repeat(2,1fr); } .gk2 .guides{ grid-template-columns:1fr; } .gk2 .steprow, .gk2 .cardgrid{ grid-template-columns:1fr; } .gk2 .cardgrid--2{ grid-template-columns:1fr; } } @media (max-width:760px){ .gk2 .hero__content{ padding:36px 28px; } .gk2 .stats{ gap:36px; } .gk2 .uni-grid, .gk2 .cardgrid--4{ grid-template-columns:1fr; } } @media (prefers-reduced-motion:reduce){ .gk2 *{ transition:none !important; animation:none !important; } } .gk2 .subhero__frame--grad{ background: radial-gradient(1100px 480px at 88% 118%, rgba(198,12,48,.55), transparent 62%), linear-gradient(118deg, #141F36 0%, var(--navy) 52%, #35213A 100%); } .gk2 .subhero__frame--grad::after{ content:none; } .gk2 .subhero__frame--grad .hero__glyph{ right:-2%; bottom:-14%; font-size:min(30vw,340px); } .gk2 .vcode{ display:inline-flex; align-items:center; gap:12px; margin-bottom:14px; } .gk2 .vcode b{ font-size:clamp(2.6rem,6vw,3.6rem); font-weight:900; letter-spacing:-.02em; color:#fff; line-height:1; } .gk2 .vtags{ display:flex; gap:6px; flex-wrap:wrap; justify-content:center; margin-top:18px; } .gk2 .vtags .tag{ font-size:.7rem; padding:4px 11px; } .gk2 .vmeta{ margin-top:20px; font-size:.8rem; color:var(--on-brand-muted); } .gk2 .srcline{ text-align:center; font-size:.88rem; color:var(--muted); margin:-14px auto 28px; max-width:760px; } .gk2 .srcline a{ color:var(--red); font-weight:700; text-decoration:underline; text-underline-offset:2px; } .gk2 .infocard__k{ font-size:.72rem; font-weight:800; letter-spacing:.12em; text-transform:uppercase; color:var(--red); margin-bottom:8px; } .gk2 .infocard .big{ color:var(--navy); font-size:1.02rem; font-weight:700; margin-bottom:6px; } .gk2 .steprow--4{ grid-template-columns:repeat(4,1fr); max-width:980px; margin:0 auto; } .gk2 .step--dim{ opacity:.45; } .gk2 .checklist{ list-style:none; padding:0; margin:14px 0 0; display:grid; gap:10px; } .gk2 .checklist li{ display:flex; gap:11px; align-items:flex-start; color:var(--navy); font-size:.97rem; } .gk2 .checklist .ck{ flex:none; width:22px; height:22px; border-radius:50%; background:var(--tint); color:var(--red); font-weight:900; font-size:.78rem; display:flex; align-items:center; justify-content:center; margin-top:2px; } .gk2 .howto{ list-style:none; counter-reset:hw; padding:0; margin:14px 0 0; display:grid; gap:12px; } .gk2 .howto li{ counter-increment:hw; position:relative; background:#fff; border:1px solid var(--border); border-radius:var(--r); padding:16px 18px 16px 58px; color:var(--navy); font-size:.96rem; } .gk2 .howto li::before{ content:counter(hw); position:absolute; left:16px; top:14px; width:28px; height:28px; border-radius:50%; background:var(--navy); color:#fff; font-weight:800; font-size:.85rem; display:flex; align-items:center; justify-content:center; } .gk2 .howto li > strong{ display:block; margin-bottom:6px; color:var(--navy); } .gk2 .howto .checklist{ margin-top:8px; } .gk2 .howto .checklist li{ padding:0; border:none; background:none; font-size:.92rem; } .gk2 .howto .tick{ margin:8px 0 0; padding-left:0; } .gk2 .howto .tick li{ font-size:.92rem; margin:.3em 0; } .gk2 .vspec{ max-width:760px; margin:0 auto; background:#fff; border:1px solid var(--border); border-radius:var(--r); overflow:hidden; } .gk2 .vrow{ display:grid; grid-template-columns:190px 1fr; gap:16px; padding:16px 20px; border-bottom:1px solid var(--border); } .gk2 .vrow:last-child{ border-bottom:0; } .gk2 .vrow__k{ font-size:.72rem; font-weight:800; letter-spacing:.1em; text-transform:uppercase; color:var(--red); padding-top:3px; } .gk2 .vrow__v{ color:var(--navy); font-size:.94rem; } .gk2 .vrow__v p{ margin:0 0 .55em; } .gk2 .vrow__v p:last-child{ margin-bottom:0; } .gk2 .vpath{ display:flex; flex-direction:column; gap:12px; margin:14px 0 0; } .gk2 .vpath__line{ display:flex; align-items:center; gap:8px; 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padding-left:22px; } .gk2 .prose ul.tick li::before{ content:\"\"; position:absolute; left:4px; top:.58em; width:7px; height:7px; border-radius:2px; background:var(--red); } @media (max-width:980px){ .gk2 .steprow--4{ grid-template-columns:repeat(2,1fr); } } @media (max-width:640px){ .gk2 .steprow--4{ grid-template-columns:1fr; } .gk2 .vrow{ grid-template-columns:1fr; gap:6px; } }<\/style>\n<div class=\"gk2\">\n  <div class=\"gk2-surface\">\n\n    <section class=\"subhero\">\n      <div class=\"subhero__frame subhero__frame--grad\">\n        <span class=\"hero__glyph\" aria-hidden=\"true\">E-4<\/span>\n        <div class=\"subhero__in\">\n          <span class=\"eyebrow\"><span class=\"seal\">\u5370<\/span> Visa Guides<\/span>\n          <div class=\"vcode\"><b>E-4<\/b><\/div>\n          <h1>Technical Instruction (Technology Transfer)<\/h1>\n          <p class=\"subhero__sub\">\uae30\uc220\uc9c0\ub3c4(E-4) &mdash; E-series work visa (professional employment) &#8211; Technical Instruction \/ Technology Transfer<\/p>\n          <div class=\"vtags\">\n            <span class=\"tag tag--red\">&#9679; Active<\/span>\n            <span class=\"tag\">Category E<\/span>\n          <\/div>\n          <p class=\"vmeta\">Last updated 2026-07-04 \u00b7 Official Korean government sources<\/p>\n        <\/div>\n      <\/div>\n    <\/section>\n\n    <section class=\"section\">\n      <div class=\"note\"><strong>Note:<\/strong> This is general information, not legal advice. Rules change &mdash; always confirm on the official sources for your country.<\/div>\n      <div class=\"sec-head\"><h2>At a glance<\/h2><\/div>\n      <div class=\"cardgrid\"><div class=\"infocard\"><div class=\"infocard__k\">Who it&#39;s for<\/div><p>Foreign nationals invited by a public or private organization in Korea to PROVIDE (transfer\/instruct) either specialized knowledge in the natural sciences or technology\u2026<\/p><\/div>\n        <div class=\"infocard\"><div class=\"infocard__k\">Length of stay<\/div><p>Up to 5 years per period of stay granted under the current Enforcement Rules of the Immigration Act (\ucd9c\uc785\uad6d\uad00\ub9ac\ubc95 \uc2dc\ud589\uaddc\uce59 \ubcc4\ud45c1), which set the maximum single grant for the E-1 to\u2026<\/p><\/div>\n        <div class=\"infocard\"><div class=\"infocard__k\">Can you work?<\/div><p>Yes &#8211; E-4 is a work visa. The holder may carry out the approved technical-instruction \/ technology-transfer activity at the inviting organization stated in the status.<\/p><\/div>\n        <div class=\"infocard\"><div class=\"infocard__k\">Fee &amp; time<\/div><p>Fee: Certificate of Visa Issuance (\uc0ac\uc99d\ubc1c\uae09\uc778\uc815\uc11c): no fee for the certificate itself; single-entry visa issued abroad approx. US$60 equivalent (set by the consulate). Domestic: change of status of stay 130,000 KRW; extension of stay 60,000 KRW; alien registration 30,000 KRW. Fees are set by the Enforcement Rules and change periodically &#8211; verify current amounts on HiKorea. (unverified exact current amounts) \u00b7 Time: Certificate of Visa Issuance review commonly takes about one to a few weeks\u2026<\/p><\/div><\/div>\n    <\/section>\n\n<section class=\"section section--tight\"><div class=\"prose\"><h2>Who can apply<\/h2><ul class=\"checklist\"><li><span class=\"ck\">\u2713<\/span><span>Foreign nationals invited by a public or private organization in Korea to PROVIDE (transfer\/instruct) either specialized knowledge in the natural sciences or technology belonging to a special industrial field.<\/span><\/li><li><span class=\"ck\">\u2713<\/span><span>The exact legal definition in the Enforcement Decree of the Immigration Act (\ucd9c\uc785\uad6d\uad00\ub9ac\ubc95 \uc2dc\ud589\ub839 \ubcc4\ud45c1, item 22) is &#8216;a person invited by a public\/private institution in Korea to provide specialized natural-science knowledge or special-field industrial technology&#8217; (\uc790\uc5f0\uacfc\ud559\ubd84\uc57c\uc758 \uc804\ubb38\uc9c0\uc2dd \ub610\ub294 \uc0b0\uc5c5\uc0c1\uc758 \ud2b9\uc218\ud55c \ubd84\uc57c\uc5d0 \uc18d\ud558\ub294 \uae30\uc220\uc744 \uc81c\uacf5\ud558\uae30 \uc704\ud558\uc5ec \ub300\ud55c\ubbfc\uad6d\ub0b4\uc758 \uacf5\u00b7\uc0ac\uae30\uad00\uc73c\ub85c\ubd80\ud130 \ucd08\uccad\ub418\uc5b4 \uc885\uc0ac\ud558\uace0\uc790 \ud558\ub294 \uc790).<\/span><\/li><li><span class=\"ck\">\u2713<\/span><span>In practice this covers foreign technical experts\/engineers sent by an overseas company to a Korean organization to instruct or transfer a specific technology (for example under a technology-transfer\/technology-introduction or dispatch contract).<\/span><\/li><li><span class=\"ck\">\u2713<\/span><span>The key distinction from E-3 (Research): E-4 is about PROVIDING\/transferring existing specialized technology to a Korean organization, whereas E-3 is about carrying out research and development.<\/span><\/li><li><span class=\"ck\">\u2713<\/span><span>Low relevance to students.<\/span><\/li><\/ul><\/div><\/section>\n<section class=\"section section--tight\"><div class=\"prose\"><h2>Documents you&#39;ll need<\/h2><ul class=\"tick\"><li>General documents for the Certificate of Visa Issuance (\uc0ac\uc99d\ubc1c\uae09\uc778\uc815\uc11c) route: integrated application form (\ud1b5\ud569\uc2e0\uccad\uc11c) with one color photo (3.5cm x 4.5cm)<\/li><li>passport and copy<\/li><li>the inviting Korean organization&#8217;s business registration certificate (\uc0ac\uc5c5\uc790\ub4f1\ub85d\uc99d) or corporation registration<\/li><li>and documents proving the technical-instruction relationship &#8211; typically the technology-transfer \/ technology-introduction contract or dispatch\/instruction contract between the sending company and the Korean organization, plus a dispatch order or certificate of employment from the sending company showing the applicant&#8217;s technical qualifications\/career. The exact E-4 attachment list on the current HiKorea\/immigration manual could not be fully loaded during this research (HiKorea detail page returned a server error) and should be confirmed on HiKorea for the specific case. (E-4-specific supporting documents above are described from the standard practice for this category and should be treated as indicative, not an exhaustive official list.) (unverified exact list)<\/li><\/ul><\/div><\/section>\n<section class=\"section section--tight\"><div class=\"prose\"><h2>How to apply<\/h2><ul class=\"tick\"><li>Overseas embassy visa (\uc0ac\uc99d) or domestic change-of-status; E-4 commonly uses a Certificate of Visa Issuance (\uc0ac\uc99d\ubc1c\uae09\uc778\uc815\uc11c) filed in Korea by the inviting Korean company\/organization.<\/li><li>E-4 is one of the categories eligible for the Certificate of Visa Issuance \/ Confirmation route (\uc0ac\uc99d\ubc1c\uae09\uc778\uc815\uc11c) &#8211; confirmed on HiKorea, where E-4 is listed together with E-1, E-2, E-3, E-5, E-6, E-7, E-9 and E-10.<\/li><li>Typical flow: the inviting Korean public\/private organization applies to its local immigration office for the Certificate of Visa Issuance on behalf of the foreign technician; once issued, the applicant applies for the actual E-4 visa at a Korean embassy\/consulate abroad.<\/li><li>Someone already in Korea on another eligible status may instead apply for a change of status of stay at an immigration office (booked via HiKorea).<\/li><li>Short technical assignments under 90 days generally use the short-term employment visa (C-4) rather than E-4.<\/li><\/ul><\/div><\/section>\n\n    <section class=\"section section--tight\">\n      <div class=\"sec-head\"><h2>Stay &amp; extension<\/h2><\/div>\n      <div class=\"cardgrid cardgrid--2\" style=\"max-width:760px\"><div class=\"infocard\"><div class=\"infocard__k\">How long you can stay<\/div><p>Up to 5 years per period of stay granted under the current Enforcement Rules of the Immigration Act (\ucd9c\uc785\uad6d\uad00\ub9ac\ubc95 \uc2dc\ud589\uaddc\uce59 \ubcc4\ud45c1), which set the maximum single grant for the E-1 to E-7 statuses at 5 years; in practice the period granted is tied to the technology-transfer\/instruction contract term. (Note: an older version of the Enforcement Decree attached Table 1 historically listed 3 years (3\ub144) as the ceiling for E-4; the current rule for the E-series maximum single grant is 5 years &#8211; confirm the current figure on HiKorea for the specific case.)<\/p><\/div>\n<div class=\"infocard\"><div class=\"infocard__k\">Extending your stay<\/div><p>Extension of stay (\uccb4\ub958\uae30\uac04 \uc5f0\uc7a5\ud5c8\uac00) is applied for at an immigration office (booked via HiKorea) before the current period of stay expires, generally with an updated technology-transfer\/instruction contract and proof that the qualifying technical-instruction activity is continuing. Each extension is granted within the statutory upper limit for E-4.<\/p><\/div><\/div>\n    <\/section>\n\n    <section class=\"section section--tight\"><div class=\"prose\"><h2>Working on this visa<\/h2><p>Yes &#8211; E-4 is a work visa. The holder may carry out the approved technical-instruction \/ technology-transfer activity at the inviting organization stated in the status.<\/p><p>Work outside that scope, or moving to a different inviting organization, requires prior immigration permission (\uccb4\ub958\uc790\uaca9\uc678 \ud65c\ub3d9\ud5c8\uac00 or a change\/report) &#8211; working beyond the permitted activity is not allowed.<\/p><\/div><\/section>\n\n    <section class=\"section section--tight\">\n      <div class=\"sec-head\"><h2>Requirements in detail<\/h2><\/div>\n      <div class=\"vspec\"><div class=\"vrow\"><div class=\"vrow__k\">Money to show<\/div><div class=\"vrow__v\"><p>Wage set per the technology-transfer\/dispatch contract; GNI-linked professional-visa floor may apply but exact figure per MOJ manual (unverified).<\/p><\/div><\/div>\n<div class=\"vrow\"><div class=\"vrow__k\">Ministry endorsement<\/div><div class=\"vrow__v\"><p>No fixed ministry endorsement; requires invitation\/contract from a Korean industrial body or organization that needs the special technology. Some public-sector dispatches involve the competent authority.<\/p><\/div><\/div>\n<div class=\"vrow\"><div class=\"vrow__k\">Waivers \/ special<\/div><div class=\"vrow__v\"><p>Qualification is possession of specialized technology not available in Korea, provided under a technology-provision\/dispatch contract; based on technical expertise rather than a fixed degree\/career threshold.<\/p><\/div><\/div><\/div>\n    <\/section>\n<section class=\"section section--tight\"><div class=\"prose\"><h2>Sub-types<\/h2><p>E-4 (\uae30\uc220\uc9c0\ub3c4) is a single category for technical instruction \/ technology transfer. It is legally distinct from E-3 (\uc5f0\uad6c, Research): E-4 = providing\/transferring specialized technology to a Korean organization; E-3 = performing research and R&amp;D.<\/p><p>The public immigration manuals do not publish distinct E-4 sub-codes (e.g. E-4-1\/E-4-2) in the way E-7 is subdivided, so no sub-classification is stated here.<\/p><p>(No official E-4 sub-codes documented &#8211; unverified.)<\/p><\/div><\/section>\n<section class=\"section section--tight\"><div class=\"cardgrid cardgrid--2\" style=\"max-width:760px\"><div class=\"infocard\"><div class=\"infocard__k\">Family<\/div><p>Spouse and unmarried minor children accompany on F-3 (\ub3d9\ubc18).<\/p><\/div>\n<div class=\"infocard\"><div class=\"infocard__k\">Mobile ARC<\/div><p>Applies. Since 2025-01-10 registered foreigners aged 14+ with their own smartphone can issue a mobile ARC (\ubaa8\ubc14\uc77c \uc678\uad6d\uc778\ub4f1\ub85d\uc99d; same legal effect); E-4 holders eligible after alien registration.<\/p><\/div><\/div><\/section>\n<section class=\"section section--tight\"><div class=\"prose\"><h2>2025&ndash;2026 policy updates<\/h2><ul class=\"tick\"><li>No E-4-specific 2025-2026 rule change was confirmed from official sources during this research.<\/li><li>E-4 is not individually named in the major 2025-2026 skilled\/science-talent visa reforms (which centre on E-7-4 skilled-worker points, E-3 research experience relaxation, and the Top-Tier F-2 fast-track for advanced-industry, science and technology personnel).<\/li><li>A Ministry of Justice research paper (\ub17c\ub2e8) on preventing technology outflow through the visa system discusses E-3 and E-7 as high-tech-access categories but does not report an implemented E-4 change.<\/li><li>Re-verify against the current immigration manual before relying on this.<\/li><li>(Any E-4 changes: unverified \/ none confirmed.)<\/li><\/ul><\/div><\/section>\n<section class=\"section section--tight\"><div class=\"prose\"><h2>Common mistakes<\/h2><ul class=\"tick\"><li>Confusing E-4 (providing\/transferring technology) with E-3 (Research\/R&amp;D) or with E-7 (specified activities\/employment) &#8211; the correct category depends on whether the person is transferring existing specialized technology, doing research, or in a contracted specialty job.<\/li><li>Using E-4 for a short assignment under 90 days, which normally requires the C-4 short-term employment visa instead.<\/li><li>Starting the technical-instruction work before the visa or change of status is actually approved.<\/li><li>Assuming any technician qualifies &#8211; the activity must be specialized natural-science knowledge or special-field industrial technology provided under an invitation from a Korean public\/private organization.<\/li><\/ul>\n<h2>Where this leads<\/h2><div class=\"vpath\"><div class=\"vpath__note\">As an E-series long-term work status, an E-4 holder who maintains qualifying residence may later apply for F-2 long-term residence (e.<\/div><div class=\"vpath__note\">g.<\/div><div class=\"vpath__note\">the points-based F-2-7) and, after meeting stay-length, income and other conditions, F-5 permanent residence &#8211; the same general track available to E-1 to E-7 holders.<\/div><div class=\"vpath__note\">(E-4-specific eligibility thresholds not separately documented in the sources reviewed.<\/div><div class=\"vpath__note\">).<\/div><\/div>\n<p style=\"margin-top:20px\"><a class=\"btn btn--red\" href=\"https:\/\/www.hikorea.go.kr\/info\/InfoDatail.pt?CAT_SEQ=272&amp;PARENT_ID=132\" target=\"_blank\" rel=\"noopener\">Official source &#8599;<\/a>\n        &nbsp;<a class=\"btn btn--outline\" href=\"https:\/\/www.hikorea.go.kr\" target=\"_blank\" rel=\"noopener\">Official manual &#8599;<\/a><\/p><\/div><div class=\"note\" style=\"margin-top:20px\"><strong>If you break the rules:<\/strong> Overstay\/illegal work \u2192 deportation (\uac15\uc81c\ud1f4\uac70), entry ban and penalties; illegal employment up to 3 yrs imprisonment or \u20a930M fine (Immigration Control Act Article 94, \ucd9c\uc785\uad6d\uad00\ub9ac\ubc95 \u00a794); overstay penalty fine (\ubc94\uce59\uae08) and re-entry restriction.<\/div><\/section>\n\n    <section class=\"ctaband\">\n      <h2>Get visa updates by email<\/h2>\n      <p>Join GoKorea Insider for clear updates on visas and key dates.<\/p>\n      <a class=\"btn btn--white\" href=\"\/gokorea-insider\/\">Join Insider &mdash; Free<\/a>\n    <\/section>\n  <\/div>\n<\/div>\n","protected":false},"featured_media":332,"template":"","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"rank_math_title":"E-4 Visa Korea: Technical Instructor | GoKorea Study","rank_math_description":"For specialists invited to transfer technical knowledge to a Korean organization. Learn who qualifies for the E-4 visa, documents, and how to apply.","rank_math_focus_keyword":"korea technical instruction visa e-4","rank_math_robots":[]},"visa_category":[32],"journey_stage":[],"class_list":["post-318","visa-guides","type-visa-guides","status-publish","has-post-thumbnail","hentry","visa_category-e"],"acf":{"visa_code":"E-4","visa_name_en":"Technical Instruction (Technology Transfer)","visa_name_kr":"\uae30\uc220\uc9c0\ub3c4(E-4)","guide_type":"visa","status":"active","visa_type":"E-series work visa (professional employment) - Technical Instruction \/ Technology Transfer","eligible_applicants":"Foreign nationals invited by a public or private organization in Korea to PROVIDE (transfer\/instruct) either specialized knowledge in the natural sciences or technology belonging to a special industrial field. The exact legal definition in the Enforcement Decree of the Immigration Act (\ucd9c\uc785\uad6d\uad00\ub9ac\ubc95 \uc2dc\ud589\ub839 \ubcc4\ud45c1, item 22) is 'a person invited by a public\/private institution in Korea to provide specialized natural-science knowledge or special-field industrial technology' (\uc790\uc5f0\uacfc\ud559\ubd84\uc57c\uc758 \uc804\ubb38\uc9c0\uc2dd \ub610\ub294 \uc0b0\uc5c5\uc0c1\uc758 \ud2b9\uc218\ud55c \ubd84\uc57c\uc5d0 \uc18d\ud558\ub294 \uae30\uc220\uc744 \uc81c\uacf5\ud558\uae30 \uc704\ud558\uc5ec \ub300\ud55c\ubbfc\uad6d\ub0b4\uc758 \uacf5\u00b7\uc0ac\uae30\uad00\uc73c\ub85c\ubd80\ud130 \ucd08\uccad\ub418\uc5b4 \uc885\uc0ac\ud558\uace0\uc790 \ud558\ub294 \uc790). In practice this covers foreign technical experts\/engineers sent by an overseas company to a Korean organization to instruct or transfer a specific technology (for example under a technology-transfer\/technology-introduction or dispatch contract). The key distinction from E-3 (Research): E-4 is about PROVIDING\/transferring existing specialized technology to a Korean organization, whereas E-3 is about carrying out research and development. Low relevance to students.","required_documents":"General documents for the Certificate of Visa Issuance (\uc0ac\uc99d\ubc1c\uae09\uc778\uc815\uc11c) route: integrated application form (\ud1b5\ud569\uc2e0\uccad\uc11c) with one color photo (3.5cm x 4.5cm); passport and copy; the inviting Korean organization's business registration certificate (\uc0ac\uc5c5\uc790\ub4f1\ub85d\uc99d) or corporation registration; and documents proving the technical-instruction relationship - typically the technology-transfer \/ technology-introduction contract or dispatch\/instruction contract between the sending company and the Korean organization, plus a dispatch order or certificate of employment from the sending company showing the applicant's technical qualifications\/career. The exact E-4 attachment list on the current HiKorea\/immigration manual could not be fully loaded during this research (HiKorea detail page returned a server error) and should be confirmed on HiKorea for the specific case. (E-4-specific supporting documents above are described from the standard practice for this category and should be treated as indicative, not an exhaustive official list.) (unverified exact list)","processing_notes":"E-4 is one of the categories eligible for the Certificate of Visa Issuance \/ Confirmation route (\uc0ac\uc99d\ubc1c\uae09\uc778\uc815\uc11c) - confirmed on HiKorea, where E-4 is listed together with E-1, E-2, E-3, E-5, E-6, E-7, E-9 and E-10. Typical flow: the inviting Korean public\/private organization applies to its local immigration office for the Certificate of Visa Issuance on behalf of the foreign technician; once issued, the applicant applies for the actual E-4 visa at a Korean embassy\/consulate abroad. Someone already in Korea on another eligible status may instead apply for a change of status of stay at an immigration office (booked via HiKorea). Short technical assignments under 90 days generally use the short-term employment visa (C-4) rather than E-4.","duration_of_stay":"Up to 5 years per period of stay granted under the current Enforcement Rules of the Immigration Act (\ucd9c\uc785\uad6d\uad00\ub9ac\ubc95 \uc2dc\ud589\uaddc\uce59 \ubcc4\ud45c1), which set the maximum single grant for the E-1 to E-7 statuses at 5 years; in practice the period granted is tied to the technology-transfer\/instruction contract term. (Note: an older version of the Enforcement Decree attached Table 1 historically listed 3 years (3\ub144) as the ceiling for E-4; the current rule for the E-series maximum single grant is 5 years - confirm the current figure on HiKorea for the specific case.)","extension_rules":"Extension of stay (\uccb4\ub958\uae30\uac04 \uc5f0\uc7a5\ud5c8\uac00) is applied for at an immigration office (booked via HiKorea) before the current period of stay expires, generally with an updated technology-transfer\/instruction contract and proof that the qualifying technical-instruction activity is continuing. Each extension is granted within the statutory upper limit for E-4.","work_permission":"Yes - E-4 is a work visa. The holder may carry out the approved technical-instruction \/ technology-transfer activity at the inviting organization stated in the status. Work outside that scope, or moving to a different inviting organization, requires prior immigration permission (\uccb4\ub958\uc790\uaca9\uc678 \ud65c\ub3d9\ud5c8\uac00 or a change\/report) - working beyond the permitted activity is not allowed.","korean_requirement":"","path_to":"As an E-series long-term work status, an E-4 holder who maintains qualifying residence may later apply for F-2 long-term residence (e.g. the points-based F-2-7) and, after meeting stay-length, income and other conditions, F-5 permanent residence - the same general track available to E-1 to E-7 holders. (E-4-specific eligibility thresholds not separately documented in the sources reviewed.)","application_fee":"Certificate of Visa Issuance (\uc0ac\uc99d\ubc1c\uae09\uc778\uc815\uc11c): no fee for the certificate itself; single-entry visa issued abroad approx. US$60 equivalent (set by the consulate). Domestic: change of status of stay 130,000 KRW; extension of stay 60,000 KRW; alien registration 30,000 KRW. Fees are set by the Enforcement Rules and change periodically - verify current amounts on HiKorea. (unverified exact current amounts)","processing_time":"Certificate of Visa Issuance review commonly takes about one to a few weeks (institution-dependent); the embassy visa step after that is usually a few business days; in-country change of status also takes several weeks. Times vary by immigration office. (unverified for exact figures)","policy_updates_2025_2026":"No E-4-specific 2025-2026 rule change was confirmed from official sources during this research. E-4 is not individually named in the major 2025-2026 skilled\/science-talent visa reforms (which centre on E-7-4 skilled-worker points, E-3 research experience relaxation, and the Top-Tier F-2 fast-track for advanced-industry, science and technology personnel). A Ministry of Justice research paper (\ub17c\ub2e8) on preventing technology outflow through the visa system discusses E-3 and E-7 as high-tech-access categories but does not report an implemented E-4 change. Re-verify against the current immigration manual before relying on this. (Any E-4 changes: unverified \/ none confirmed.)","subtypes_note":"E-4 (\uae30\uc220\uc9c0\ub3c4) is a single category for technical instruction \/ technology transfer. It is legally distinct from E-3 (\uc5f0\uad6c, Research): E-4 = providing\/transferring specialized technology to a Korean organization; E-3 = performing research and R&D. The public immigration manuals do not publish distinct E-4 sub-codes (e.g. E-4-1\/E-4-2) in the way E-7 is subdivided, so no sub-classification is stated here. (No official E-4 sub-codes documented - unverified.)","common_mistakes":"Confusing E-4 (providing\/transferring technology) with E-3 (Research\/R&D) or with E-7 (specified activities\/employment) - the correct category depends on whether the person is transferring existing specialized technology, doing research, or in a contracted specialty job. Using E-4 for a short assignment under 90 days, which normally requires the C-4 short-term employment visa instead. Starting the technical-instruction work before the visa or change of status is actually approved. Assuming any technician qualifies - the activity must be specialized natural-science knowledge or special-field industrial technology provided under an invitation from a Korean public\/private organization.","official_link":"https:\/\/www.hikorea.go.kr\/info\/InfoDatail.pt?CAT_SEQ=272&PARENT_ID=132","official_manual_url":"https:\/\/www.hikorea.go.kr","issuance_route":"Overseas embassy visa (\uc0ac\uc99d) or domestic change-of-status; E-4 commonly uses a Certificate of Visa Issuance (\uc0ac\uc99d\ubc1c\uae09\uc778\uc815\uc11c) filed in Korea by the inviting Korean company\/organization.","keta_required":"","annual_quota":"","income_threshold":"Wage set per the technology-transfer\/dispatch contract; GNI-linked professional-visa floor may apply but exact figure per MOJ manual (unverified).","points_system_summary":"","subtype_table":"","family_accompaniment":"Spouse and unmarried minor children accompany on F-3 (\ub3d9\ubc18).","competent_ministry_endorsement":"No fixed ministry endorsement; requires invitation\/contract from a Korean industrial body or organization that needs the special technology. Some public-sector dispatches involve the competent authority.","mobile_residence_card":"Applies. Since 2025-01-10 registered foreigners aged 14+ with their own smartphone can issue a mobile ARC (\ubaa8\ubc14\uc77c \uc678\uad6d\uc778\ub4f1\ub85d\uc99d; same legal effect); E-4 holders eligible after alien registration.","penalties":"Overstay\/illegal work \u2192 deportation (\uac15\uc81c\ud1f4\uac70), entry ban and penalties; illegal employment up to 3 yrs imprisonment or \u20a930M fine (Immigration Control Act Article 94, \ucd9c\uc785\uad6d\uad00\ub9ac\ubc95 \u00a794); overstay penalty fine (\ubc94\uce59\uae08) and re-entry restriction.","experience_waiver_conditions":"Qualification is possession of specialized technology not available in Korea, provided under a technology-provision\/dispatch contract; based on technical expertise rather than a fixed degree\/career threshold.","last_updated_date":"2026-07-04"},"uagb_featured_image_src":{"full":["https:\/\/gokoreastudy.com\/wp-content\/uploads\/2026\/07\/korea-visa-passports.jpg",1600,2000,false],"thumbnail":["https:\/\/gokoreastudy.com\/wp-content\/uploads\/2026\/07\/korea-visa-passports-150x150.jpg",150,150,true],"medium":["https:\/\/gokoreastudy.com\/wp-content\/uploads\/2026\/07\/korea-visa-passports-240x300.jpg",240,300,true],"medium_large":["https:\/\/gokoreastudy.com\/wp-content\/uploads\/2026\/07\/korea-visa-passports-768x960.jpg",768,960,true],"large":["https:\/\/gokoreastudy.com\/wp-content\/uploads\/2026\/07\/korea-visa-passports-819x1024.jpg",819,1024,true],"1536x1536":["https:\/\/gokoreastudy.com\/wp-content\/uploads\/2026\/07\/korea-visa-passports-1229x1536.jpg",1229,1536,true],"2048x2048":["https:\/\/gokoreastudy.com\/wp-content\/uploads\/2026\/07\/korea-visa-passports.jpg",1600,2000,false],"trp-custom-language-flag":["https:\/\/gokoreastudy.com\/wp-content\/uploads\/2026\/07\/korea-visa-passports-10x12.jpg",10,12,true]},"uagb_author_info":{"display_name":"admin","author_link":"https:\/\/gokoreastudy.com\/ko\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"E-4 \u5370 Visa Guides E-4 Technical Instruction (Technology Transfer) \uae30\uc220\uc9c0\ub3c4(E-4) &mdash; E-series work visa (professional employment) &#8211; Technical Instruction \/ [&hellip;]","_links":{"self":[{"href":"https:\/\/gokoreastudy.com\/ko\/wp-json\/wp\/v2\/visa-guides\/318","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gokoreastudy.com\/ko\/wp-json\/wp\/v2\/visa-guides"}],"about":[{"href":"https:\/\/gokoreastudy.com\/ko\/wp-json\/wp\/v2\/types\/visa-guides"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gokoreastudy.com\/ko\/wp-json\/wp\/v2\/media\/332"}],"wp:attachment":[{"href":"https:\/\/gokoreastudy.com\/ko\/wp-json\/wp\/v2\/media?parent=318"}],"wp:term":[{"taxonomy":"visa_category","embeddable":true,"href":"https:\/\/gokoreastudy.com\/ko\/wp-json\/wp\/v2\/visa_category?post=318"},{"taxonomy":"journey_stage","embeddable":true,"href":"https:\/\/gokoreastudy.com\/ko\/wp-json\/wp\/v2\/journey_stage?post=318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}