D-4-2 (Company and Institution Training) Korea Visa Guide | 2026

1. What D-4-2 Is

D-4-2 is the general training code for education or training at a company or institution — as distinct from D-4-1, which is Korean-language study at a university-attached institute. The general training (D-4) status covers training at public and national research institutes and training centres, internships at foreign-invested companies, and internships in Korea for staff and students developed by Korean companies operating abroad. The tailored corporate internship programme (K-Trainee) runs under this code for a designated list of countries including Vietnam, China, Thailand, Japan, India, Indonesia, Malaysia, Singapore and the Philippines.

2. Eligibility Checklist

• Enrollment/acceptance fits current D-4-2 eligible training scope.
• Institution/program records satisfy current immigration document standards.
• Can prove adequate financial support for training and living expenses.
• Required academic/identity documents are complete and internally consistent.
• No unresolved immigration non-compliance issues that materially affect eligibility.

3. Criteria Summary

• D-4-2 is not a points-based visa category.
• Review centers on training-purpose authenticity and institution/program credibility.
• Manual revisions may adjust D-4 training subtype handling and required evidence detail.
• Always confirm latest D-4 subtype guidance before filing.

4. Salary and Contract Rules

• D-4-2 is a training status and does not use E-series salary-threshold logic.
• Any outside activity permission is separate and must follow applicable authorization rules.
• Financial support proof is a primary review component for D-4-2 cases.
• If filing appears to pursue non-training work purpose, refusal risk increases.

5. Employer and Workplace Change Rules

• D-4-2 is not employer-sponsored as its core eligibility basis.
• Program/institution change or leave should be handled through proper reporting workflow.
• If any authorized outside activity is allowed, it must stay within permitted scope.
• Unreported status-condition changes can impact extension or future status-change filings.

6. Required Documents

• Application set (form, passport, photo, fee proof).
• Official D-4-2 training admission/enrollment documentation.
• Academic/identity background records required by current guidance.
• Financial support documents for intended stay duration.
• Any office-specific supporting documents requested during review.

7. Fees and Processing

• D-4 issuance/extension fees follow official schedules in manuals.
• Processing timelines vary by office workload and file completeness.
• Training-purpose or funding inconsistencies frequently trigger supplements.
• Apply with enough lead time before program start and stay expiry.

8. Common Rejection Reasons

• Program/institution eligibility is not sufficiently proven for D-4-2.
• Financial support evidence is weak, inconsistent, or unverifiable.
• Declared purpose appears mismatched with D-4-2 training scope.
• Past immigration non-compliance or unreported status changes.
• Application uses outdated subtype assumptions after revisions.

9. FAQ