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