Personal hygiene is a cornerstone of food safety, and hair restraints are a mandatory requirement for any staff member working in food-preparation areas or areas where equipment and utensils are cleaned. According to the ServSafe Manager curriculum and the FDA Food Code, hair restraints—such as hats, hairnets, or beard restraints—are designed to prevent hair from falling into food and onto food-contact surfaces. Hair is a physical contaminant and can also carry pathogens likeStaphylococcus aureus.

The requirement specifically targets "food handlers," which the FDA defines as anyone working with exposed food, clean equipment, utensils, linens, or unwrapped single-service items. In this question,Dishwashersare the only group listed who directly interact with clean equipment and utensils. While they may not be preparing food, their proximity to clean plates, silverware, and the "clean end" of the dish machine makes hair restraint mandatory to prevent contamination of surfaces that will later touch food or a customer’s mouth. Conversely, Greeters, Cashiers, and Hosts typically work in the "front of house" or at the entrance. Because these roles generally do not involve handling open food or cleaning kitchen equipment, they are usually exempt from the hair-restraint requirement, though they must still maintain high standards of personal neatness. For those in the kitchen, the restraint must effectively keep hair away from the face and shoulders. Managers must strictly enforce this rule for all back-of-house staff, including prep cooks, line cooks, and dishwashers, as a single strand of hair found in a meal or on a "clean" utensil can lead to both customer dissatisfaction and regulatory citations.