The E-9 visa is issued through Korea's Employment Permit System (EPS, 고용허가제), a government-to-government framework with 16 countries. It covers unskilled and semi-skilled labor in manufacturing, construction, agriculture, livestock, fisheries, forestry, and select service sectors. Employers must be registered with the Ministry of Employment and Labor and cannot hire foreign workers on E-9 if Korean workers are available. As of November 2025, the permitted work scope for non-skilled construction E-9 workers was formally clarified — 22 specific construction sub-trades are now explicitly listed, including painting, plumbing, waterproofing, masonry, tiling, formwork, structural steel, mechanical services, carpentry, plastering, scaffolding, stonework, welding, landscaping, demolition, rebar, concrete, earthworks, wallpapering, and interior finishing. In all cases, workers must have basic trade knowledge and work under the supervision of a skilled foreman.