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