Picture a start-up and its founder. It is likely that you are imagining a young Zuckerberg type in a minimal loft working on some new app no one under the age of 30 understands. Chances are you\u2019re not envisioning someone approaching retirement. Yet, according to a 2012 CIBC report entitled, \u201cStart-ups \u2014 Present and Future,\u201d by CIBC Deputy Chief Economist, Benjamin Tal, people 50 and over make up the fastest growing segment of the start-up market. Businesses started by \u201cseniorpreneurs\u201d now account for close to 30% of total start-ups, more than double the rate seen in the 1990s. Why the surge in seniorpreneurs? The economic downturn certainly played a part causing many boomers to worry whether they would be able to afford to retire or afford to maintain the same lifestyle if they retired. At the height of the recession, Statistics Canada reported that self-employment among Canadians 55 and over had increased by more than 100,000 individuals. People are also just living longer, and many feel they still have meaningful work that they want to do past the standard age of retirement. When the retirement age was set at 65 in the U.S., it was the 1930\u2019s, and the average life expectancy for men was only 60. "The trajectory of our careers anticipated an arc that would last from around\u2026when we graduated from high-school\u2026 until an end-point of 65. And what we know is that an end-point of 65 isn\u2019t realistic. It\u2019s not realistic for our economy, it\u2019s not realistic for individuals and it\u2019s not good for corporations,\u201d says Lisa Taylor, President of Challenge Factory, a Toronto-based career-management firm, and author of Retain and Gain: Career Management for Small Business.