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