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