The next time you are in a sandwich shop or deli where workers make your sandwich in front of you as you select items to be included, check out their hands. According to law, there should be no direct hand contact with your food by the sandwich maker. Hands are dirty and vectors of disease, and food can be contaminated by the worker touching, for example, money in the cash register and then touching your lunch meat. To prevent this obvious source of disease, the law requires such workers to wear gloves to keep hands clean.
For more information click here: http://www.foodsafetynews.com/2015/10/hold-the-bacteria-made-to-order-disease/#.VhpmIfmqqko