Mystery Diners S04 E04 Employee of the Month

The owner of Colombo's Italian Steakhouse in Eagle Rock, California, fears an Employee of the Month competition is the reason for a lack of staff harmony. The team proves this because of a 4-time Employee of the Month-winning waitress. She has been badmouthing her co-workers and sabotaging a waiter by throwing away his ticket orders as soon as they're printed.