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