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