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If you are a foreign researcher in physics, mathematics, statistics, or earth sciences planning to work in Korea, you will likely apply under:
👉 E-7-1 (Specialty Occupation) – Natural Science Professional (2112)
This category covers professionals conducting theoretical and applied research in natural sciences.
1️⃣ Who Qualifies as a Natural Science Professional (2112)?
According to the Immigration Manual:
A person who conducts research on theories and applications in natural science fields and works at science-related companies
Typical Job Examples:
- Pure / Applied Mathematician
- Statistician (Applied / Mathematical Statistics)
- Geophysicist
- Seismologist
- Ocean Scientist
- Earth Science Specialist
2️⃣ E-7 (2112) Eligibility Checklist
| Requirement | Details | Status |
|---|---|---|
| Visa Type | E-7-1 (Professional) | ☐ |
| Job Code | 2112 | ☐ |
| Degree | Bachelor’s or higher (field-related) | ☐ |
| Experience | General E-7 standard applies | ☐ |
| Employment Contract | Required | ☐ |
| Government Recommendation | Required for SMEs (MSS/KOSME) | ☐ |
| Salary Level | Must meet E-7 minimum income threshold | ☐ |
3️⃣ When Is E-3 (Research) More Appropriate?
If the employer is:
- A government-funded research institute
- A defense-related research institute
- A national/public research organization
E-3 (Research) may be more suitable .
Corporate R&D positions typically fall under E-7 (2112).
4️⃣ Process: Change D-10 to E-7 (2112)
How to change D-10 to E-7
① Sign employment contract
→ ② Confirm job-code alignment (2112)
→ ③ Obtain recommendation letter (if SME)
→ ④ Apply for change of status at Immigration
→ ⑤ Approval → Start employment
5️⃣ Required Documents (General E-7 Structure)
- Application form
- Passport
- Fee
- Employment contract
- Degree certificate
- Work experience certificate (if applicable)
- Business registration certificate
- Recommendation letter (if applicable)
- ARC (if changing status inside Korea)
⚠️ Common Mistakes
- Job description too vague
- Degree unrelated to science field
- Misclassification as marketing/statistical survey work
- Company research center not properly registered
Precise job description drafting significantly improves approval rates.
Final Advice
The E-7 (2112) visa is designed for advanced scientific researchers in private sector R&D environments.
Accurate job code classification and document preparation are critical for approval.
If you are unsure whether your position qualifies under 2112 or E-3, consult experts before filing.

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