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