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