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