The San Bernardino County Code requires food workers employed in San Bernardino county to possess a valid, unexpired Food Worker Certification Card. County Code defines food workers as waiters, waitresses, bartenders, buspersons, cooks, dishwashers, hosts, hostesses managers, meat cutters, deli persons, etc. There are 3 ways to get your card. You may take the course online and come to a testing site to take the test; you may watch the course on DVD and come to a testing site to take the test; or, you may attend a food worker class at a local community college. The card is valid for 3 years.