labor rights foreigners Korea fired in Korea visa foreign worker mistakes Korea freelance jobs Korea visa reporting timing Korea XpatJobs e7 visa job change korea foreign worker reporting delay Korea foreign worker job change unpaid wages foreigner Korea Kowork foreign worker side job korea change job korea visa part-time jobs Korea quitting job Korea foreigner labor office communication Korea foreign employment law korea visa sponsorship Korea JobKorea resigning job korea unpaid salary Korea foreigner work visa korea rules notice period korea KOTRA job fair korea employment visa foreign worker ghosted Korea job termination Korea foreigner visa violation part time korea work in South Korea 2025 employer shutdown foreign worker Korea work visa status teaching jobs Korea foreign worker visa korea rules job change korea immigration work compliance expat career Korea workplace change reporting Korea foreign worker labor office foreign workers Korea foreign worker job change korea foreign worker unsafe work Korea Saramin foreigner jobs Seoul Korea job platforms Korea job search guide visa reporting deadline Korea foreign worker resignation English jobs Korea LinkedIn Korea non-teaching jobs Korea work visa korea employer no response Korea job change visa korea process foreign worker korea immigration reporting steps company closed Korea visa jobs in Korea for foreigners Seoul Global Center