It's easy. You don't have to call OSHA or send a letter to your Congressman. Just look at the inside of any protective helmet you are considering for your employees. You should see a label with the manufacturer's name, the ANSI standard it meets, and its class. Most hard hat hard hats today are a type 1 hard hat class C,E, & G. And, most of todays hard hats should meet the ANSI Z89.1-1997 standards. Don't forget to leave the tags in the hat just in case of an inspection.