In the time span in which life expectancy rose from 75 to 85 years, productivity increased significantly. Granted, weekly working hours were reduced a bit, but there should be lots left to even lower the pension age.
I still think that you cannot lower the pension age while the life expectancy rose, there is no way a system like this will be ever balanced.
The risen productivity was not fully given back to the workers.
Not completely, I agree.