Want to enjoy a longer, happier life? Just keep on working

Life expectancy is rising but Britons are being encouraged to retire early. That’s both ridiculous and costly, says an expertSarah Harper has a personal take on early retirement. “My father stopped work at 54,” says Professor Harper, founder of the Institute for Population Ageing at Oxford University. “His employers, IBM, offered him early retirement. He was really excited at the prospect.”But the voluntary work and further education that Robert Harper had lined up