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