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