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