1. Introduction: The Hidden Economic Cost of Distrust

Two people can sign a carefully drafted contract, yet no contract can anticipate everything that may happen in the future. During a collaboration, situations arise about which the contract is silent: one party gains access to information the other cannot see; quality can be reduced without attracting attention; or an urgent decision must be made that will later affect both parties’ rights, profits, and responsibilities.

At such moments, economic activity rests on more than law and the text of the contract. Each party relies, to some extent, on the expectation that the other will not exploit the relationship’s gray areas to appropriate a greater benefit. That expectation is one form of trust.

The Organisation for Economic Co-operation and Development defines trust as a person’s belief that another person or institution will act in a positive and reliable way consistent with that person’s expectations. In this framework, trust is not merely an optimistic feeling about others; it is part of the mechanism that makes human cooperation, economic relationships, and institutional performance more feasible.1

A lack of trust does not necessarily stop transactions. People still sign contracts, buy goods, and enter into collaborations, but they spend more time and resources protecting themselves. Contract clauses grow longer, more guarantees are demanded, information remains confined to a smaller circle, and monitoring replaces part of the work that cooperation would otherwise perform. In Paul Zak and Stephen Knack’s theoretical model, people in low-trust environments must devote more resources to checking the truthfulness of their counterparties’ claims; the authors conclude that such environments can reduce investment rates.3

Some of these costs have no distinct line item in financial statements. The time a manager spends checking every minor task, the opportunity lost because of fear of a partner, the knowledge an employee withholds for fear of misuse, and the research a customer must conduct to distinguish truthful claims from false ones all impose real costs—even if they are never recorded under a heading such as “losses caused by distrust.”

Using World Values Survey data from 29 market economies, Stephen Knack and Philip Keefer found associations between trust, civic norms, and certain indicators of economic performance.[2] Zak and Knack likewise examined the relationship between trust and growth through a theoretical model and cross-country analysis.[3] These studies do not treat trust as the sole cause of growth, nor can they support a simple recipe for development.2

Even the robustness of findings in this literature is not uniform. An analysis by Sjoerd Beugelsdijk and colleagues found that some of Knack and Keefer’s results are sensitive to the sample and control variables, whereas Zak and Knack’s results are more robust. Estimates of the effect size of trust also change with the sample and model.[4] Trust should therefore be regarded as an important but multifaceted factor, not a variable that by itself determines a country’s economic fate.4

How Does Distrust Enter Economic Life?

Distrust does not always begin with a major scandal or an obvious crime. Sometimes it forms through small decisions: a slight reduction in quality without informing the customer; a promise whose feasibility was unclear from the outset; an unexplained delay in payment; the use of information obtained in a private conversation; or the exclusion of a person’s share because that person has less power to defend it.

At first glance, each of these behaviors may seem confined to a single transaction. But economic experience does not remain solely in the memories of the two parties involved. A dissatisfied customer becomes suspicious of a brand, a trade, or an entire market. An employer repeatedly confronted with concealment imposes tighter controls on all employees. Someone whose knowledge has been used against them shares less information in the next collaboration.

In such an environment, honest people also bear the cost of others’ conduct. A conscientious seller must prove that they are not like a fraudulent seller. A committed employee is placed under a system of monitoring designed to control other people’s underperformance. A new partner must provide guarantees against misconduct they have not yet committed.

Distrust gradually shifts from a personal experience to a mental rule: “Warranties cannot be trusted,” “A partner will ultimately try to take a larger share,” “Reporting a mistake will only be used against you,” or “Anyone who gets the chance will find a way around the contract.” Once such expectations become widespread, cautious behavior is no longer merely an individual choice; it becomes a condition of survival.

The Problem Is Not Merely Individual Ethics

One might argue that the solution is to raise people to be honest. That response is necessary, but insufficient. Professional conduct takes shape within a structure of contracts, power, incentives, and enforcement. If a deceptive firm earns more profit, complaints become exhausting to pursue, and a responsible person is driven out of the market for maintaining quality, ethical exhortation alone cannot repair the field.

Conversely, a sound structure is incomplete without responsible people. No regulatory body can be present in every minute of work. Law can define quality, responsibility, and confidentiality, but its real implementation rests in the hands of managers, specialists, producers, workers, and sellers who must make decisions in specific situations.

This article does not substitute professional ethics for policy analysis, macroeconomic stability, the quality of governance, infrastructure, or the legal system. Its claim is narrower: even in the presence of capital, law, and planning, unhealthy professional relationships can erode part of an economy’s productive capacity. Conversely, integrity remains vulnerable without a structure that supports it.

Where Does Professional Ethics Fit in the Economy?

Professional ethics is not simply about politeness or kindness. The central question is how a person uses the discretion, knowledge, and trust placed in their hands because of their profession.

A producer makes decisions about materials the customer cannot see. A seller knows which information could change a buyer’s choice. A manager has authority over other people’s time, safety, and job prospects. A specialist may deal with someone who cannot assess the accuracy of their claims. A partner may gain access to accounts, contacts, and experience that would not have been available outside that relationship.

These situations create not only economic opportunities but also responsibilities. The greater the gap in knowledge, power, or access between the parties, the greater the possibility of abuse. Professional ethics does not ask the stronger party to renounce profit, independence, or discretion; it asks that these advantages not be used at the cost of concealing the truth or violating another person’s rights.

Nor is profit rejected in this framework. A firm cannot remain viable without income, and individuals are entitled to benefit from their skill, labor, and willingness to take risks. The ethical boundary lies in the route by which benefit is obtained: does profit come from solving problems, quality, creativity, and service, or does it depend on a customer’s ignorance, a worker’s weakness, a partner’s trust, and the difficulty of proving misconduct?

Trust Is the Result of Observable Conduct

Trust is not built by asking people to be optimistic. A customer comes to trust a supplier when a warranty is actually honored. A worker becomes attached to an organization when promises and payments are predictable. A partner shares information more openly when they see that access to information does not become a license to appropriate it.

In this sense, trust is not always the starting point of a relationship; it is often the result of small, repeated experiences. A clear response to a complaint, accurate bookkeeping, admitting a mistake, or honoring a contract even when performance becomes costly can build more credibility than hundreds of advertising slogans.

The reverse path is also made up of small decisions. A concealed defect, a distorted report, or unauthorized use of information may produce an immediate benefit, but it teaches the other party to be more cautious, more closed, and more demanding in the next relationship.

The Article’s Central Question

This article asks how professional ethics can be moved beyond the level of general advice and turned into part of market health, partnership security, dignity at work, support for innovation, and Iran’s progress.

The answer is not sought only in new laws and codes. Iranian-Islamic culture has also left us a tradition in which work, markets, and skill were linked to concepts such as muruwwa, futuwwa, stewardship, fairness, and keeping one’s word. The aim is not a superficial return to premodern structures; the question is which ethical cores of that tradition can be combined with clear contracts, law, standards, and accountability today.

Before turning to that history, the concept of professional ethics itself must be made more precise: How does it differ from personal ethics? How does it relate to competence and law? And why is conflict of interest one of its most important tests?