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