The Royal Swedish Academy of Sciences has decided to award the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 2016 to

Oliver Hart
Harvard University, Cambridge, MA, USA

and

Bengt Holmström
Massachusetts Institute of Technology, Cambridge, MA, USA

“for their contributions to contract theory”

Society’s many contractual relationships include those between shareholders and top executive management, an insurance company and car owners, or a public authority and its suppliers. As such relationships typically entail conflicts of interest, contracts must be properly designed to ensure that the parties take mutually beneficial decisions. This year’s laureates have developed contract theory, a comprehensive framework for analysing many diverse issues in contractual design, like performance-based pay for top executives, deductibles and co-pays in insurance, and the privatisation of public-sector activities.

In the late 1970s, Bengt Holmström demonstrated how a principal (e.g., a company’s shareholders) should design an optimal contract for an agent (the company’s CEO), whose action is partly unobserved by the principal. Holmström’s informativeness principle stated precisely how this contract should link the agent’s pay to performance-relevant information. Using the basic principal-agent model, he showed how the optimal contract carefully weighs risks against incentives. In later work, Holmström generalised these results to more realistic settings, namely: when employees are not only rewarded with pay, but also with potential promotion; when agents expend effort on many tasks, while principals observe only some dimensions of performance; and when individual members of a team can free-ride on the efforts of others.

In the mid-1980s, Oliver Hart made fundamental contributions to a new branch of contract theory that deals with the important case of incomplete contracts. Because it is impossible for a contract to specify every eventuality, this branch of the theory spells out optimal allocations of control rights: which party to the contract should be entitled to make decisions in which circumstances? Hart’s findings on incomplete contracts have shed new light on the ownership and control of businesses and have had a vast impact on several fields of economics, as well as political science and law. His research provides us with new theoretical tools for studying questions such as which kinds of companies should merge, the proper mix of debt and equity financing, and when institutions such as schools or prisons ought to be privately or publicly owned.

The Economics Nobel Isn’t Really A Nobel according to Maggie Koerth-Baker at FiveThirtyEight.com.

But, technically, there is no Nobel Prize in economics.² Instead, there is the Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel. It was first awarded in 1969 and is named not after a person, but after the central bank of Sweden — the Sveriges Riksbank — which funds it. The Nobel Foundation doesn’t pay out the award or choose the winner (though the winner is chosen in accordance with the same principles used by the Nobel Foundation), but it does list the prize on its website along with the Nobels, tracks winners the same as Nobel laureates, and even promotes the prize alongside its own. Members of the Nobel family have spoken out against the award.

So why does it exist? Notre Dame historian Philip Mirowski has found evidence that the economics award grew out of Swedish domestic politics. According to Mirowski, in the 1960s, the Bank of Sweden was trying to free itself from government oversight and become independent. One way to do that was to frame economics as purely scientific, rather than political — in which case, government interference could only hurt the bank. Having a Nobel Prize boosted economics’ scientific street cred. And Mirowski isn’t the only academic who is skeptical of whether there should be a Nobel-associated economics prize. Friedrich von Hayek, who won the award in 1974, used his Nobel Banquet speech to critique the prize.³ “The Nobel Prize confers on an individual an authority which in economics no man ought to possess,” Hayek said. He worried that the prize would influence journalists, the public and politicians to accept certain theories as gospel — and enshrine them in law — without understanding that those ideas have a different level of uncertainty than, say, gravity or the mechanics of a human knee.