Many food borne illnesses are traced to the employees who handle foods. Food service employees should not cough or sneeze into their hands, smoke cigarettes, scratch their heads, touch their faces, or otherwise practice habits that will contaminate their hands and the food they work with.
All food service employees should have regular physical examinations by a medical doctor. Many local laws require blood tests, chest-rays, and examinations when a food service worker is hired, and on a regular basis thereafter.
Food service employees who are sick should not report to work. An employee with a cold, cough, open sore, or boil could easily contaminate food. An employee who has been exposed to an infectious disease should consult a doctor before returning to work.