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