Job differentiation gives employers market power, allowing them to pay workers less than their marginal productivity. We estimate a differentiated jobs model using application data from Careerbuilder.com. We find direct evidence of substantial job differentiation. Without the use of instruments...

Employees show more commitment to an employer that promotes the greater good, and they work harder too. Moreover, many people are willing to give up some of their compensation to contribute to a social cause. Being able to attract a motivated workforce would be particularly important for the...