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