fired in Korea visa Saramin part-time jobs Korea English jobs Korea Kowork JobKorea LinkedIn Korea non-teaching jobs Korea work in South Korea 2025 company closed Korea visa work visa korea KOTRA job fair Korea job search guide freelance jobs Korea teaching jobs Korea change job korea visa foreigner jobs Seoul employer shutdown foreign worker Korea jobs in Korea for foreigners foreign worker resignation employer no response Korea visa sponsorship Korea work visa korea rules Korea job platforms resigning job korea XpatJobs job termination Korea foreigner foreign worker ghosted Korea Seoul Global Center korea employment visa expat career Korea work visa status notice period korea unpaid salary Korea foreigner foreign worker job change quitting job Korea foreigner