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