Documents required from Korea if applying for Visitor (Someone is calling from Korea)-

Scanned Copy of Invitation letter from Friend/ Son/ Brother addressing to The Visa Officer, Korean High Commission, New Delhi mentioning the purpose and Duration of stay along with the Names and Passport details of the Persons invited.
Employment proof – last 6 months bank statements updated, copy will do along with last 6 months pay slips.
Invitee’s Passport copy+ valid Korea Visa or nationality proof.

Invitee’s details, such as full name and DOB.
Invitee’s details, such as in case of companies, name and phone no. of the person in-charge and in case of individuals, inviter’s full name, ID no. (Foreigner Registration No.) and phone number.
Inviting company/ individual’s seal/signatures at the end of the letter.

Photocopy of Certificate of Business Registration latest or tax payment documents of the current year.

If the inviter is a Korean Government or Public Institution/ Organization, Certificate of Business registration is not required.

Copy of the Business Registration Certificate of the Indian & S. Korean Company.
Bank letter and company bank statement in case of proprietor.
Bank statement of applicant of the last six months.
A separate letter of Employment Certificate is required mentioning the Name, Designation, Date of Joining, Period of Employment and Salary. This is a mandatory requirement.
Income Tax return of the last one year.
Confirmed round-trip air ticket.
Visa is issued for a maximum stay of 90 days and is also valid for 90 days.