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