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