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