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