Parental leave is one of the essential social policies that are at the center of welfare state development and family policies of countries. The components of parental leave policies is twofold; a) duration component (parental leave period): job protected leave period as the number of weeks after...

This paper studies the design of the optimal non linear taxation in an economy where longevity varies across agents, and depends on three factors: longevity genes, health investment and farsightedness. Provided earnings, farsightedness and genes are correlated, governmental intervention can be...