The E-5 visa covers foreign nationals licensed to practice specific professions recognized under Korean law. In practice, the main E-5 use cases are: commercial airline pilots employed by Korean airlines (Ministry of Land, Infrastructure and Transport recommendation required), foreign doctors and Korean traditional medicine doctors (한의사) with advanced expertise practicing at Korean government or non-profit hospitals (Ministry of Health recommendation required), foreign medical/dental/oriental medicine students doing accredited internships or residencies at Korean institutions, and foreign ship officers (해기사) employed by Korean shipping companies. Note: as of October 2025, Korean traditional medicine doctors (한의사) are explicitly included in the E-5 qualifying professions.