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