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