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