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