Say, for example, you decided to teach English or learn French or do something overseas and you were gone for a period that exceeded...so that you had to cash out your pension. You weren't 40, your pension wasn't vested, and you chose to take the money out. If you come back to a public sector job and you have the option of buying back that pensionable time, you buy it back. It's the same with the military. It's the same with municipal police forces. I personally bought back time from working as a summer student as a border services officer.
On December 1st, 2009. See this statement in context.