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