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