> ## Content Index > Fetch the complete content index at: https://www.bangduty.com/llms.txt > Use this file to discover other available public pages before exploring further. # Professor, Researcher, Professional - URL: https://www.bangduty.com/en/visa/professor-researcher-professional/ - Published: 2025-01-05T03:40:00.000Z - Updated: 2026-06-01T01:36:18.000Z - Author: J. Bang - Tags: E1, E3, E4, E5, Visa, #visa - [Professor (E1)](#professor-e1) - [Researcher (E3)](#researcher-e3) - [Technical instructor (E4)](#technical-instructor-e4) - [Professional (E5)](#professional-e5) - [Service](#service) ## Professor (E1) ### Who Foreigners who can apply for an E1 (E-1) visa is as follows. - A Professor at a college, junior college, graduate college and college-affiliated research institute - An advanced science and technology researcher who meets requirements as follows. - You are employed by science and engineering college, junior college, college-affiliated research institute, government research institute, and corporate research institute etc. - You must have a master's degree of science and engineering with career of more than 3 years or doctoral degree of science and engineering. - You must have a job recommendation from the ministry of education of Korea. The period of stay is up to 5 years and can be extended. ### Visa issuance and change You need the visa issuance certificate before applying for an E1 visa. You can apply online. Even visa waivers and non-work visa holders can change to an E1 visa. ### Permission for activities not covered by E1 visa status E1 visa holders as advanced science and technology researchers can get a permit for activities of an E3 visa. E1 visa holders who work at a religious organization can get a permit for activities of a [D6 visa](https://www.bangduty.com/en/visa/media-culture-religion/). ## Researcher (E3) ### Who Foreigners must meet requirements as follows to get an E3 (E-3) visa. - You must have a master's degree with career of more than 3 years or doctoral degree including being about to get it. If you obtain a master's degree from Korean schools or foreign high rank schools or you are author of master's thesis listed in the SCIE, A&HCI, SCI, SSCI, career requirement will be exempted. - You are one of the following. - A researcher of science, engineering, social sciences, humanities, arts and physical education at the government-funded research institute - A researcher of science and engineering at defense industry research institute - A researcher in science, engineering and advanced industrial technology at the college, junior college, college-affiliated research institute, government research institute, and corporate research institute which carries out industrial technology development project led by the Korean government. - An advanced science and technology researcher employed by science and engineering college, junior college, college-affiliated research institute, government research institute, corporate research institute etc. You must get a job recommendation from the ministry of science and technology of Korea. - A researcher in social sciences, humanities, arts and physical education at college and junior college etc. - A visiting researcher who is employed by a foreign organization and will conduct research activities in Korea The period of stay is up to 5 years and can be extended. ### Visa issuance and change You need the visa issuance certificate before applying for an E3 visa. But it's not mandatory if you will work at the government-funded research institute or defense industry research institute. You can apply online for a visa and visa issuance certificate. Even visa waivers and non-work visa holders can change to an E3 visa. ### Permission for activities not covered by E3 visa status E3 visa holders as advanced science and technology researchers can get a permit for activities of an E1 visa. ## Technical instructor (E4) Foreigners who will provide a special technology not available in Korea to local companies and organizations can have an E4 (E-4) visa. The period of stay is up to 5 years and can be extended. You need the visa issuance certificate before applying for an E4 visa. You can apply online. Even visa waivers and non-work visa holders can change to an E4 visa. ## Professional (E5) Foreigners who can apply for an E5 (E-5) visa is as follows. Other some professionals can have an [E7 visa](https://www.bangduty.com/en/visa/specific-activities-e7/). - An airplane pilot recommended by the ministry of transportation of Korea - A medical doctor recommended by the ministry of health of Korea - An intern and resident who trains at a hospital after graduating from a Korean college or graduate school of medicine, dentistry, or traditional medicine - A ship operating professional like a captain, engineer and navigator employed by a Korean transportation company The period of stay is up to 5 years and can be extended. A pilot and ship professional don't need the visa issuance certificate and others need it. 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