What is the primary function of a hard hat?

The primary function of a hard hat is to protect against falling objects. Hard hats are designed with a rigid outer shell and an inner suspension system that helps absorb the impact from falling debris, which can be common in construction and industrial environments. This protection is critical for ensuring worker safety, as head injuries from falling objects can lead to serious injuries or fatalities. The design of hard hats allows them to distribute the force of an impact, significantly reducing the risk of injury to the wearer.

Other options, such as keeping the head warm or providing electrical insulation, do not align with the primary safety purpose of a hard hat. While some hard hats may incorporate insulation features for warmth or have additional electrical safety ratings, those are secondary functions. The core responsibility of a hard hat remains its role in protecting workers from overhead hazards in their environment.