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