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