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