Duty Shoe refers to the footwear designed for use by health care and service professionals.
Duty Shoes are work shoes designed for support, comfort and durabilty. Specifically used in the health care and service industries by those who spend a considerable amount of time on their feet.
For example, in Germany, those working in the hospitals and clinics, usually wear white Duty Shoes. Nurses in the Philippines, also wear white Duty Shoes in white.