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