Answer: Dishwasher is the best answer.
Step-by-step explanation:
Dishwashers and hosts are required to wear hair restraints while working, but greeters and cashiers typically do not need to wear hair restraints.
The key reasons are:
Dishwashers have direct contact with dishes, utensils, and glassware that will come into direct contact with prepared food, so they must contain their hair to prevent contamination.
Hosts are in close proximity to open food and plates being delivered to tables, so hair restraints prevent loose hairs from falling into the exposed food.
Greeters have only brief contact with customers in the entrance area, so their hair risk is low.
Cashiers ring up checks away from open food areas, so hair restraints are not required.