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