Korea job search guide jobs in Korea for foreigners foreign worker visa korea rules job change korea immigration work compliance change job korea visa retirement pay Korea korea employment visa visa reporting timing Korea labor office foreign workers Korea resigning job korea notice period korea workplace change reporting Korea foreign worker Saramin Kowork XpatJobs work visa korea rules unpaid wages Korea Korean labor law foreigners foreigner jobs Seoul e7 visa job change korea foreign worker unsafe work Korea fired in Korea visa teaching jobs Korea job change Korea work in South Korea 2025 foreign worker resignation expat career Korea English jobs Korea foreign worker mistakes Korea foreign worker side job korea unpaid wages foreigner Korea job change visa korea process foreign worker korea immigration reporting steps foreign worker Korea foreign worker job change korea visa reporting deadline Korea work visa status employer no response Korea part-time jobs Korea employer shutdown foreign worker Korea KOTRA job fair foreign worker job change E-7 visa Korea labor rights foreigners Korea non-teaching jobs Korea foreign worker severance Korea foreign worker reporting delay Korea unpaid severance Korea workplace change Korea severance pay Korea Korea job platforms salary not paid Korea labor office communication Korea unpaid salary Korea foreigner JobKorea work visa korea freelance jobs Korea job termination Korea foreigner visa sponsorship Korea company closed Korea visa labor office Korea visa violation part time korea foreign worker ghosted Korea foreign employment law korea Seoul Global Center quitting job Korea foreigner LinkedIn Korea