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