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