Almost any job. F-4 holders can work without a separate work permit in most professional and skilled fields. The main restrictions are: (1) 단순노무 (simple/unskilled labor) — the unskilled occupations listed in the currently-in-force Ministry of Justice notification governing F-4 employment scope are prohibited (「재외동포(F-4) 자격의 취업활동 제한범위 고시」, Ministry of Justice Notification No. 2026-65, effective 2026-02-12, which superseded the prior notification on the same subject); (2) adult entertainment establishments, gambling venues, and businesses that violate public morals. F-4 holders CAN work in manufacturing, construction, or agriculture if the role is skilled — the restriction is on unskilled work specifically. Exception (narrower than 'any depopulation area'): under section 2 of the same notification, an F-4 holder who keeps their registered residence (거소) in a depopulation area (인구감소지역) that the Minister of Justice has designated as a Region-Specific Visa (지역특화형 비자) project city, county or district — or who works within the metropolitan city or province that residence belongs to — is not bound by restriction (1) or by the notification's separate list of jobs restricted to protect the public interest or the domestic employment order. Restriction (2) still applies, and a depopulation area that is not a designated Region-Specific Visa area does not qualify.