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