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