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