The E-4 (기술지도) visa is issued to foreign specialists who come to Korea to transfer industrial technology, proprietary technical know-how, or specialized production methods to a Korean company or institution. E-4 is primarily used by multinational companies transferring specific technologies to Korean affiliates, joint ventures, or licensed manufacturers.
E-4 covers a foreign expert coming to Korea to:
• Transfer proprietary manufacturing processes or industrial know-how to Korean employees
• Provide technical guidance during installation of specialized industrial equipment
• Train Korean engineers on the operation of patented or licensed technology
• Provide onsite troubleshooting under a technology licensing agreement
Key principle: The technology being transferred must be proprietary to the foreign specialist or their company. A software engineer teaching general Python programming does not qualify for E-4. A specialist from a German machinery manufacturer commissioning a proprietary CNC system at a Korean factory under a licensing agreement does qualify.
Technology transfer agreement: A formal contract between the Korean company and the foreign entity is almost always required.
For the specialist: 5+ years in the field, formal role at the technology-holding company, credentials demonstrating expertise.
For the Korean company: A formal technology transfer or licensing agreement as the legal basis.
Key documents:
• Appointment letter from the foreign technology-holding company
• Technology transfer agreement between the foreign and Korean company
• Korean company's business registration certificate
• Detailed description of the technology and training plan
The technology transfer agreement is the cornerstone document for E-4 — invest time in having it clearly drafted before applying.
도움이 필요하신가요?
저희 전문가들은 e-4 technology transfer visa korea — foreign technical experts & industrial know-how 사례를 정기적으로 처리하며 한국 출입국관리소가 요구하는 사항을 정확히 알고 있습니다.
Can a freelance technical consultant get E-4?
Potentially yes, if the consultant has a formal technology transfer contract with a Korean company and possesses proprietary or highly specialized technical knowledge. A generic IT consultant typically needs E-7; a specialist with patented technology under a formal licensing arrangement has a stronger E-4 case.
• Technical credentials: degree, professional licenses, patents, work history
• Criminal background check (apostilled)
Duration: 3 months to 1 year, project-based. Extensions possible if ongoing.
| E-4 Technology Transfer | E-3 Research | E-7 Specialty Occupation | |
|---|---|---|---|
| Core activity | Transferring proprietary technology | R&D employment | Skilled employment |
| Legal basis | Technology transfer agreement | Research contract | Employment contract |
| Duration | Project-based (defined) | Contract-based | Ongoing |
| Proprietary tech required? | Yes | No | No |
German turbine specialist at a Korean plant for 6 months under a licensing deal: E-4. Same specialist staying as a full-time engineer: E-7.