Application for travel expenses (여비 사전 신청서) is to request in advance the expected expenses incurred for a business trip and must be submitted at least one week before the ticket purchase date. Invitation email from the host institution and joint research plan must be submitted.
After reture:
Travel expenses report (출장 보고서) is to report the purpose, results, and costs incurred after a business trip. The following supporting documents must be submitted.