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