General Required Documents:

Please visit your country's Korean Embassy's website for the most accurate list of requirements

1. Visa Application form
2. Recently Passport sized Photo
3. Valid Passport (Original and Copy)
4. Birth Certificate (Original and Copy)
5. Visa Fee

From the Korean Organization

• Invitation letter from the Korean Organization written in Korean
• Guarantee letter from the Korean Organization
• Photocopy of the Korean Organization's Business Registration Certificate
• Service Contract
• Business trip order

How to apply at the embassy or consulate

• Step 1: Find the nearest Korean Embassy or consulate in your home country
• Step 2: Verify the required documents to apply for the visa
• Step 3: Make an appointment with the Korean embassy or  consulate if it is needed
• Step 4: Visit the Korean embassy or consulate on your appointed date. Do not forget to bring the documents
• Step 5: Wait for your turn (some places would need you to take a number)
• Step 6: Once it is your turn, go to the assigned window and submit the documents. The staff will check your documents and they may also ask you a few questions. 
• Step 7: If your application has been accepted, you will be given a document with the date when you will claim your passport
• Step 8: On the claiming date, visit the embassy or consulate at the designated time
• Step 9: Wait for your turn to claim your passport
• Step 10: Once you have claimed the passport, check if you have received the visa and if the information on the visa is correct

Alternatively, you can also go through a travel agency so they can apply for the visa for you