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