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