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