All teachers must apply for the alien registration card (ARC) within 90 days of arriving in Korea. Your ARC is a form of official identification. The Korean government requires all non-Korean citizens working in Korea to obtain this ID and carry it on their person at all times.
Foreign residents will need to return to the Immigration Office to pick up their Alien Registration Card. The process often takes between 7 and 14 days. Alternatively, a courier can deliver the card for between 5,000 and 7,000 won. Please note that you will have to surrender your passport during this period, so plan accordingly.
Alien Registration Cards are surrendered to immigration officials when departing Korea at the end of an employee's contract.
The following documents are required to apply;
The application form
The copy of the passport
One photo: 3.5cm x 4.5cm
A copy of the Business License of the Employer.
A copy of the Business License of the Academic Institute
The Health Check results
The fee: 10,000KRW