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