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