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