Simple systems are simple to enforce. The more granular the system the more overhead to sort out and the more mistakes / corruption.

1) Listing the different numbers of jobs and what categories they are in.
2) The length of time people are doing each section of jobs.
3) Different levels of stress in non-physical jobs as this too affects stress levels.
4) Different people have different tolerances to different things. Better factor that in too to make sure the system is as fair as possible

Which is exactly what the French are actually asking….

Life expectancy for unskilled manual labor is 73 for men and 78 for women
My point, thank.
So the French, I do apology on their behalf, thinking, you know, working to live and not living for work, perhaps to have the last 13 years of your life for just envoy the grand-children or gardening, is not too much.
But no.
Sarkozy is having an ideological war on the French. He is a Conservative and he is in favour of the Rich. So, rich have to be rich and envoy life, Poor have to be poor and be thrown after use.

my Grandfather has now been retired almost longer than he has been working, and he is bored.” My Grandfather never had the opportunity, or my dad.

You do know that the idea of a pension was for you to be able to live once you were no longer able to work, right?” Welcome in the 19th Century