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