visa reporting timing Korea company closed Korea visa work visa korea rules part-time jobs Korea foreign worker reporting delay Korea teaching jobs Korea foreigner jobs Seoul e7 visa job change korea foreign worker mistakes Korea work in South Korea 2025 employer no response Korea foreign worker resignation change job korea visa foreign worker visa korea rules job change korea immigration work compliance visa violation part time korea visa sponsorship Korea visa reporting deadline Korea XpatJobs foreign worker ghosted Korea freelance jobs Korea unpaid salary Korea foreigner English jobs Korea labor office foreign workers Korea workplace change reporting Korea foreign worker korea employment visa Kowork notice period korea labor rights foreigners Korea expat career Korea work visa status Seoul Global Center fired in Korea visa unpaid wages foreigner Korea job termination Korea foreigner Saramin job change visa korea process foreign worker korea immigration reporting steps foreign employment law korea labor office communication Korea LinkedIn Korea Korea job search guide jobs in Korea for foreigners foreign worker side job korea resigning job korea foreign worker job change korea work visa korea foreign worker unsafe work Korea foreign worker job change employer shutdown foreign worker Korea KOTRA job fair Korea job platforms non-teaching jobs Korea JobKorea quitting job Korea foreigner