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