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