Doris Pells, 91, holds onto a certificate commending her excellent employment at McDonald's on Thursday, July 11, 2013 in Naples, Fla. Pells has worked for the franchise for 11 years. She is well known by the regulars who dine at the Park Shore McDonald's. Her colleagues refer to her as "Mama Doris." "I love the people I work with and I love the people I meet," Pells said. Pells is likely the oldest McDonald's employee.