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