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