Principal–agent problem
Conflict when an agent acts on behalf of a principal.
The principal–agent problem (often abbreviated agency problem) refers to the conflict in interests and priorities that arises when one person or entity (the "agent") takes actions on behalf of another person or entity (the "principal"). The problem worsens when there is a greater discrepancy of interests and information between the principal and agent, as well as when the principal lacks the means to punish the agent. The deviation of the agent's actions from the principal's interest is called "agency cost". Common examples include corporate management (agent) and shareholders (principal), elected officials (agent) and citizens (principal), or brokers (agent) and markets (buyers and sellers, principals).
- field
- Economics and institutional theory
- known_for
- Conflict of interests and asymmetric information between principal and agent
- key_concepts
- Agency cost, moral hazard, adverse selection, multiple principal problem
- common_examples
- Corporate management and shareholders, elected officials and citizens, brokers and markets
- mechanisms_to_align_interests
- Piece rates, profit sharing, efficiency wages, performance measurement, agent posting a bond, threat of termination
Lore & Background
The principal–agent theory emerged in the 1970s from the combined disciplines of economics and institutional theory. There is some contention as to who originated the theory, with theorists Stephen Ross and Barry Mitnick both claiming authorship. Ross is said to have originally described the dilemma in terms of a person choosing a flavor of ice-cream for someone whose tastes they do not know. The most cited reference to the theory, however, comes from Michael C. Jensen and William Meckling. The theory has come to extend well beyond economics or institutional studies to all contexts of information asymmetry, uncertainty and risk. In the context of the employment contract, individual contracts form a major method of restructuring incentives, by connecting as closely as optimal the information available about employee performance, and the compensation for that performance. Mechanisms include piece rates, options, discretionary bonuses, promotions, profit sharing, efficiency wages, deferred compensation, and so on. The use of tipping is a strategy on the part of the owners or managers to align the interests of service workers with those of the owners or managers; the service workers have an incentive to provide good customer service because this makes it more likely that they will get a good tip.
Reader's Guide
The principal–agent problem is significant because it highlights the fundamental conflict that arises when one party (the agent) is entrusted to act on behalf of another (the principal) but has different interests and more information. This problem is pervasive across corporate governance, politics, and employment. The theory provides a framework for understanding why agents may not act in the principal's best interest and what mechanisms—such as performance-based pay, profit sharing, or the threat of termination—can help align interests. The problem is intensified when an agent acts on behalf of multiple principals, leading to a collective action problem in governance, particularly serious in the public sector. The theory's legacy extends beyond economics to law, game theory, and organizational behavior, influencing how contracts, incentives, and supervision are designed to mitigate agency costs. While mechanisms like tipping can reduce the problem, they are not perfect, as agents may still act in ways that benefit themselves at the principal's expense.
Did You Know?
- The principal–agent problem is often called the agency problem.
- The problem worsens when the principal lacks the means to punish the agent.
- Principal-agent models typically examine either moral hazard (hidden actions) or adverse selection (hidden information).
- The multiple principal problem is particularly serious in the public sector.
Frequently Asked Questions
Who is Principal–agent problem?
It is the structural tension in economics where a person or entity acting on another's behalf (the agent) inevitably drifts toward their own goals rather than the principal's. The conflict sharpens when the two sides hold unequal information and the principal lacks effective ways to monitor or penalize the agent.
What are Principal–agent problem's powers/role?
Its signature tools include agency cost, moral hazard, and adverse selection, each describing a different way an agent's behavior can diverge from what the principal intended. It shows up in corporate boards, government elections, and financial brokerage as a recurring source of inefficiency.
How does Principal–agent problem's story end?
There is no single villain-defeated finale; instead, economists build alignment mechanisms such as performance-based pay, profit sharing, efficiency wages, and the credible threat of termination to narrow the gap. The practical 'resolution' is reducing agency costs rather than eradicating the conflict entirely.
Why is Principal–agent problem important?
It explains why firms need governance structures, why shareholders struggle to control managers, and why voters face inherent limits in holding elected officials accountable. It sits at the crossroads of economics and institutional theory, shaping how contracts, markets, and public policy are designed.
Where does Principal–agent problem appear across the canon?
You will encounter it in corporate finance (managers versus shareholders), public economics (politicians versus citizens), and labor economics (employers versus workers). A notable subplot is the multiple-principal problem, where one agent must satisfy several principals whose goals conflict with one another.
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