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