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