This paper surveys the empirical evidence on causal effects of education on earnings for Germany and compares alternative studies in the light of their underlying identifying assumptions. We work out the different assumptions taken by various studies, which lead to rather different...

There are theoretical foundations which allow hypothesizing on a positive association of life expectancy or retirement age with income. If both cannot be falsified, the relationship of income and the internal rate of return of a public pension system is not straight forward. By application of a...