The employer shall ensure that each affected employee wears a protective
helmet when working in areas where there is a potential for injury to the head
from falling objects....

The employer shall ensure that a protective helmet designed to reduce
electrical shock hazard is worn by each such affected employee when near exposed
electrical conductors which could contact the head.... Protective helmets
purchased after July 5, 1994 shall comply with ANSI Z89.1-1986, "American
National Standard for Personnel Protection-Protective Headwear for Industrial
Workers-Requirements."