Korea job search guide Korea job platforms English jobs Korea part-time jobs Korea Saramin visa sponsorship Korea labor office communication Korea unpaid salary Korea foreigner Seoul Global Center foreign worker side job korea foreign worker job change korea foreign worker ghosted Korea foreign worker resignation work visa korea rules labor office foreign workers Korea workplace change reporting Korea foreign worker KOTRA job fair korea employment visa notice period korea job change visa korea process foreign worker korea immigration reporting steps XpatJobs company closed Korea visa foreigner jobs Seoul Kowork employer shutdown foreign worker Korea foreign worker visa korea rules job change korea immigration work compliance work visa korea foreign worker mistakes Korea change job korea visa quitting job Korea foreigner expat career Korea labor rights foreigners Korea work visa status JobKorea freelance jobs Korea foreign employment law korea LinkedIn Korea visa reporting deadline Korea jobs in Korea for foreigners visa reporting timing Korea teaching jobs Korea fired in Korea visa foreign worker job change visa violation part time korea work in South Korea 2025 non-teaching jobs Korea unpaid wages foreigner Korea job termination Korea foreigner e7 visa job change korea foreign worker reporting delay Korea employer no response Korea foreign worker unsafe work Korea resigning job korea