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