Everyone should wash their hands after using the restroom PERIOD. Food Handlers have even greater responsiblity to practice this good hygiene habit. They even have to take a class about. I take due care when preparing my meals in the privacy of my own home. Yes, they should do the same.
Food service providers don't have the right to take my money and make me sick in the process. Eating the money straight from my own pocket would probably be safer...ewww gross!