A new survey of 745 small businesses shows little change in the size distribution of businesses between 2012 and 2016, except among businesses with 40–74 employees in a way that is closely related to whether they offer health insurance coverage. Using measures of both size and voluntary...

166 countries have some kind of public old age pension.What economic forces create and sustain old age Social Security as a public program? Mulligan and Sala-i-Martin (1999b) document several of the internationally and historically common features of social security programs, and explore...