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