In some cases, it is necessary to extend the period of stay listed on the Certificate of Alien Registration. This visa is good for only one entry to Korea. If you want to leave and return to Korea during the period of exchange, it is important to apply for a re-entry permit. The immigration office handles all requests. You can take a taxi, bus, or subway.
Instructions are available in the office.
Nationals of countries with whom Korea has signed a visa waiver agreement usually enter South Korea on the Visa Waiver B-1. They are usually allowed to stay 90 days. Business executives who feel compelled to stay must fill out an application with one of the Immigration Offices. They can stay up to 90 days. Profit-making activities are excluded.