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