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