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