One of the safest ways of protecting your gang or work force is by using full brim hard hats. These hats provide the most protection you can get. The fuller brim protects against sun, wind and rain on the neck. Sun is the worst thing you can have bearing down on your next for any period of time. The back of the neck is very sensitive to this, and exposure can lead to a form of sun stoke.
Most people are unaware of this and regularly put themselves in danger. Remember, you cannot be over protected on a building site, or any site where there is consturction work going on.