The Occupational Safety and Health Administration (OSHA) provides regulations on safety glasses for workers in the United States. According to OSHA, employers need to provide safety glasses in environments where machinery or other operations present hazards to the face in the form of physical bodily injury or chemical or radiation dangers. OSHA requires all safety glasses must meet the standards established by the American National Standards Institute. In addition, OSHA requires that all safety glasses must be clean, in good condition and free from defects. For those employees who need corrective lenses, safety glasses can take the form of protective eyewear with built in corrective lenses or goggles which go over an employee's glasses.