In his seminal model (Feldstein, 1985), the government operates a social security system to counter the representative worker's myopia. (i) For a complete myope, he determined a sizable optimal tax rate (and the corresponding benefit level). (ii) For a partially shortsighted worker, he...

This paper develops a three-period overlapping-generations model where middle-aged agents care about not only their own lifetime utility but also their old parents’ and children’s well-being. The double altruistic agents choose amounts of intergenerational transfers to their old parents and...