Final answer:
Wearing a hair-net is crucial for preventing contamination from hair in sterile environments and for protecting individuals from hair-related accidents in work settings.
Step-by-step explanation:
It is important to wear a hair-net to maintain hygiene and safety in environments such as food production, healthcare, and laboratory settings. A hair-net helps to prevent hair from contaminating food or sterile areas, which could carry microorganisms or debris that might compromise the cleanliness required.
Additionally, wearing a hair-net can protect the individual from getting their hair caught in machinery or equipment, or from catching fire in laboratory settings when working with open flames.