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