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