Australia has no mandatory retirement age; keep your health and pass your checks and you can keep working. I believe one chap recently retired from a tower at about 65, and I personally know others who have gone beyond 60.
The changes to our superannuation, government policy to "work 'til you drop" due to the ageing population, and the higher age of ab initio recruits (meaning less time to build up ones super) will require a lot of controllers in future to work past 60.