Lifetime contracts imply that at a given time, wages and value of marginal product (VMP) will diverge. The contract will specify hours as well as wages, since firms will desire to prevent workers from working more when the wage is greater than VMP and from working less when the wage is less than...

It is widely recognized that children who grow up without a biological parent do worse, on average, than other children. However, because having a single parent is highly correlated with many other socioeconomic disadvantages, the negative outcomes might be caused by something beyond the...