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