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