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