How academic research affects labor and social policy is viewed through a program evaluation framework that highlights the difficulties of determining the causal impact of such research on public policy. The effect is illustrated by examples. My conclusion is that academic research can have a modest to substantial impact on policy. Its impact is enhanced if it has a number of key characteristics: high quality; reputable researchers involved; synthesized and translated into a language understood by policy makers, the general public, and the media; credible champions who will broker and defend it, in the political process or in the public realm; timeliness; and, political acceptability.