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