Dishwashers work in kitchens cleaning dining equipment such as plates, glassware, and cooking tools used in meal preparation and food service. Before loading items into the dishwasher, they scrape away big particles and rinse dishes and silverware. They may also be called upon as needed to wash and empty trash cans, wipe down counters, sweep the kitchen, and do other cleaning duties. Work hours vary by establishment, as many food-related businesses are open early in the morning, late at night, and on weekends.