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