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