Socially responsible investment in Japanese pensions

"As the level of retirement-related assets has grown, so too has public and private interest in so-called "Socially Responsible Investment" (SRI), an investment strategy that employs criteria other than the usual financial risk and return factors when selecting firms in which to invest. This study evaluates whether SRI indexes would alter portfolio risk and return patterns for the new defined contribution pension plans currently on offer in Japan. We conclude that SRI funds can be included as an option, albeit with some cost; consequently, mandatory investment in SRI portfolios cannot reasonably be justified"--National Bureau of Economic Research web site.