Does OSHA regulate indoor air quality?

Yes. While OSHA does not have one single “indoor air quality” rule for manufacturing, it regulates workplace air quality through a combination of standards, including the General Duty Clause, 29 CFR Part 1910 Subpart Z and contaminant-specific Permissible Exposure Limits (PELs). These regulations address exposure to contaminants such as silica dust, welding fumes, metal particulates, oil mist and hazardous chemicals.