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