Principal–agent problem

Sometimes, one person does work for another.

The person working is called the agent. The person they help is the principal.

A problem can happen if they want different things. The agent might not do what the principal wants. This can cost the principal money.

To fix this, people use rewards. A waiter might get a tip from a diner. This makes the waiter work hard to be kind.

Other rewards can be simple. A boss can give praise or kind words. This can help a person do a good job.

It is important to work well together. Using rewards helps everyone reach the same goal.

Sometimes, one person does work for another.

The person working is called the agent. The person they help is the principal. A problem can happen if they want different things. This is called the principal–agent problem. The agent might not do what the principal wants. This can cost the principal money. This cost is called an agency cost.

This problem is often about what people know. The agent might have more information than the principal. The principal may not be able to see everything the agent does. This can make it hard to make sure the work is done well.

To fix this, people use rewards to help them work together. In a restaurant, a diner is the principal. The waiter is the agent. A tip is a reward. It makes the waiter work hard to be kind. But tips are not perfect. A waiter might give too much food to get a big tip. This can hurt the restaurant's profit.

Other rewards can be simple. A boss can give praise or kind words. This can help a person do a good job. Some jobs also use profit sharing. This means workers get a part of the money the company makes. This can help everyone reach the same goal.

The principal-agent problem is a special idea in economics. It happens when one person acts for another person.

The person being helped is called the principal. The person doing the work is called the agent. A problem starts if these two people want different things. The agent might choose what is best for themselves instead of the principal. This mismatch in goals can cost the principal money. This loss is known as an agency cost.

This problem often happens because of a gap in information. This is called asymmetric information. The agent usually knows more than the principal does. For example, an agent might have special skills or more time. The principal cannot always see every single action the agent takes. This makes it hard to ensure the work is done right. Sometimes the agent has hidden actions or hidden information. This makes the job of the principal much more difficult.

This theory grew out of economics and institutional theory in the 1970s. There is a debate about who first created the idea. Two thinkers named Stephen Ross and Barry Mitnick both claim they started it. Ross once used a story about picking ice cream flavors to explain it. He said it was like picking a flavor for someone else. However, the most famous work comes from Michael C. Jensen and William Meckling. Their research is used by many people to study risk and uncertainty.

People use many tools to solve this problem. One way is to use money as a reward. In restaurants, diners are principals and waiters are agents. A tip is a reward to help the waiter work hard. But tips can cause new problems for the restaurant owner. A waiter might give too much food to get a bigger tip. Other jobs use commissions or profit sharing to help. Some studies show that profit sharing can raise productivity by 3 to 5 percent.

Rewards do not always have to be about money. Some bosses use praise or recognition to help. This is called non-monetary compensation. It can help workers feel a sense of pride in their work. However, paying people only for performance can sometimes cause trouble. In team jobs, individual rewards might make people less helpful to others. They might focus only on their own tasks instead of the team. Finding the right balance is a very important part of managing people.

The principal–agent problem describes a conflict of interest between two parties. This occurs when one person or entity, known as the agent, takes actions on behalf of another, known as the principal.

The agent is expected to pursue the principal's interests. However, a dilemma arises if the agent's own goals differ from those of the principal. When the agent's actions deviate from what the principal wants, it results in what economists call "agency cost." This concept is vital for understanding how businesses, governments, and legal contracts function in a complex world.

This problem is often driven by a condition called asymmetric information. This means there is a gap in the knowledge available to each party. The agent typically possesses more information, expertise, or time than the principal. Because the principal cannot observe every action the agent takes, they cannot easily ensure the agent is acting correctly. This situation can lead to two specific issues: moral hazard and adverse selection. Moral hazard involves hidden actions that the principal cannot see. Adverse selection involves hidden information that the agent keeps to themselves.

There are many different types of principal–agent relationships in society. In the corporate world, shareholders act as the principals while corporate management serves as the agent. In politics, citizens are the principals and elected officials are the agents. Even in simple service jobs, a diner acts as a principal and a waiter acts as an agent. The problem can even become more complex in the public sector. This is known as the multiple principal problem, where one agent must serve many different principals. In these cases, the principals may struggle to agree on a single set of objectives.

The theory emerged during the 1970s from economics and institutional theory. There is some debate regarding its exact origin. Two theorists, Stephen Ross and Barry Mitnick, both claim to have started the theory. Ross famously used an analogy about choosing ice cream flavors for someone else to explain the dilemma. However, the most cited work on this subject comes from Michael C. Jensen and William Meckling. Their research helped the theory expand far beyond economics into fields like law and risk management.

To solve this problem, principals use various mechanisms to align interests. In employment, managers may use commissions, profit sharing, or efficiency wages. They might also use performance measurements, such as financial statements, to monitor the agent. Another method is the threat of termination, which encourages the agent to perform well. Some agents may even post a bond to show they will act responsibly. In the service industry, tipping is a common strategy. A waiter may work harder to earn a tip, which benefits the restaurant owner. However, tipping is not perfect, as a server might give extra food to ensure a larger tip.

Compensation does not always have to be financial. Non-monetary recognition, such as praise and acknowledgement, can also motivate an agent. Research suggests that these rewards can increase intrinsic motivation, which is the internal drive to do a good job. This can improve the effort an agent puts into their work. However, there are risks to focusing only on performance-based pay. In jobs involving "team production," where output depends on many people, individual pay schemes can be harmful. These schemes may discourage workers from helping their coworkers, leading to a "free-rider" problem.

Despite these challenges, properly designed incentives can lead to significant gains. For example, studies have shown that profit-sharing can raise productivity by 3% to 5%. Finding the right balance is a central challenge in management and economics. Whether through money, praise, or peer pressure, the goal is to make the agent's self-interest match the principal's goals. By understanding these dynamics, organizations can better manage risk and improve how people work together.