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