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