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