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