Occupational licensing laws have been relaxed in a large number of U.S. states to give nurse practitioners the ability to perform more tasks without the supervision of medical doctors. We investigate how these regulations may affect wages, employment, costs, and quality of providing certain...

In the United States, occupational regulations influence the work tasks that may legally be performed by dentists and dental hygienists. Only a dentist may legally perform most dental procedures; however, a smaller list of basic procedures may be provided by either a dentist or a dental...

Thirty-four states have adopted medical marijuana laws and ten states have adopted recreational marijuana laws. There is little research comparing how these two types of laws affect drug consumption. Using a difference in difference strategy, we find that recreational laws increase past-year...

This paper introduces the concept of a "trimmed aggregate ATT," which is a weighted average of a set of group-time average treatment effect on the treated (ATT) parameters identified in a staggered adoption difference-in-differences (DID) design. The set of identified group-time ATTs that...

Two discrete choice experiments conducted early in the Covid-19 vaccination campaign show that people dramatically undervalue the Covid-19 vaccine, relative to benchmarks implied by the value of a statistical life (VSL). Our first experiment found that median willingness to pay (WTP) for initial...

Occupational licensing laws have been relaxed in a large number of U.S. states to give nurse practitioners the ability to perform more tasks without the supervision of medical doctors. We investigate how these regulations may affect wages, employment, costs, and quality of providing certain...