First, the birth of the child needs to be reported to the respective national embassy in Korea. After obtaining a valid passport, a visa application for the child must be submitted to the immigration official at Invest KOREA or any other immigration office within 30 days of birth.When applying for the visa, an application form, birth certificate, and passport, along with employment certificate of the father or parent as well as a copy of his/her alien registration card must be submitted. In case it is difficult to obtain a passport within 30 days from birth, it is possible to first apply for the visa and submit the passport at a later time. The visa (F-3 visa with a sojourn period equal to that of the parents) will If the period of sojourn in Korea is expected to exceed 90 days from the day of obtaining the visa, then it is also obligatory to apply for alien registration at the immigration office. If the departure date from Korea is expected to be within 30 days after the birth of the child, then only a passport is needed without having to apply for a visa.then be issued after submitting the passport.