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