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