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