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