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