“I thought, I’m only 65 and I feel as though I’ve been put on a shelf,” recalled Fideler, now a research fellow at the Sloan Center on Aging & Work at Boston College. “I wondered what other women my age were doing.”The experience led to her new book, Women Still at Work: Professionals Over Sixty and On the Job.While every woman’s story is unique, Fideler said, a common theme is the satisfaction and fulfillment they receive from their professions, even while juggling family, volunteer and other responsibilities.“The vast majority are delighted to be working, and as long as they have the energy and good health, they plan to continue,” said Fideler, who also is chairwoman of the Framingham Public Library’s board of trustees, and the Framingham Reads Together program for next year. “They’ve worked very hard to get where they are, maybe in a second or third career. They love what they do, and they’re good at it. They’re at the top of their game.”For her part, Fideler has no plans to slow down, either. Her next project: a study of older men in the workforce.