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