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