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