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