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