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