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