Give me an example of a time you went above and beyond the call of duty at work.

When an interviewer asks this specific question, he or she is likely trying to gain insight into your work ethic and understand how you define going 'beyond the call of duty.' Select a real experience you had, and make sure you are honest about it. Choose a specific situation that is one of your best accomplishments and relate it to the position you are interviewing for. Emphasize the actions that were above and beyond the set of expectations.