Category: Antitrust and Competition

Abuse of Dominance

Also known as: Abuse of a Dominant Position, Abuse of Market Power

Simply put

Abuse of dominance refers to anti-competitive conduct by a business that holds substantial market power, where that power is used in ways that harm competition or consumers, such as excluding rivals from the market. It is important to note that holding a dominant position is not itself prohibited; it is the abuse of that position that competition regimes treat as unlawful. This term concerns adherence to competition laws, which are external legal obligations that vary by jurisdiction.

Formal definition

Abuse of dominance denotes the abuse by one or more undertakings of a dominant position held within a relevant market or a substantial part of it, constituting anti-competitive unilateral conduct by an undertaking with substantial market power that harms competition or consumers, including by excluding rivals. The dominant position itself is lawful; competition regimes prohibit the abuse of that position where it may restrict or deter competition. Analytical approaches differ by jurisdiction and have evolved, for example, the European Commission has adopted a more economic, effects-based approach to assessing abuses of a dominant position. Precise legal definitions, thresholds for dominance, prohibited conduct categories, and enforcement outcomes are jurisdiction-specific and should be confirmed against the applicable competition law and qualified legal counsel; this entry is educational and not a substitute for professional advice.

Why it matters

Abuse of dominance sits within competition and antitrust law, which imposes external legal obligations distinct from an organization's internal ethics commitments. For compliance officers and legal teams, the concept matters because it draws a sharp line that is easy to misunderstand: holding a dominant or leading market position is lawful, but using that position in ways that harm competition or exclude rivals can constitute unlawful conduct. Employees in pricing, sales, procurement, and strategy roles may not intuitively recognize where legitimate competitive success ends and prohibited conduct begins, which is why this term features prominently in competition-law training for firms with significant market presence.

The stakes are heightened by jurisdictional variation. Definitions of dominance, the thresholds used to establish it, the categories of conduct treated as abusive, and the enforcement outcomes all differ across competition regimes. Analytical approaches also evolve over time; for example, the European Commission has adopted a more economic, effects-based approach to assessing abuses of a dominant position. A practice that raises no concern in one market may attract scrutiny in another, so multinational organizations cannot assume a single compliance posture is sufficient everywhere.

Because the legal determination of dominance and abuse is fact-specific and jurisdiction-dependent, this concept is one where training should build awareness and escalation habits rather than attempt to resolve close questions internally. Exact thresholds, prohibited conduct categories, and penalties should be confirmed against the applicable competition law and qualified legal counsel. This entry is educational and not a substitute for professional advice.

Who it's relevant to

Compliance officers and competition-law program owners

Those responsible for competition and antitrust compliance use this concept to design training and controls for business units operating in markets where the organization may hold substantial market power. Their focus is typically on helping staff recognize risk indicators and escalate close questions, rather than making abuse determinations internally, given the jurisdiction-specific and fact-dependent nature of the analysis.

Legal teams and counsel

In-house and external counsel assess whether particular conduct may raise abuse-of-dominance concerns under the applicable competition law. Because definitions of dominance, prohibited conduct categories, and enforcement approaches differ by jurisdiction and continue to evolve, legal teams are the appropriate point of reference for confirming how the concept applies to a specific market and set of facts.

Commercial, pricing, and strategy staff

Employees in sales, pricing, procurement, and strategic planning roles are relevant because their day-to-day decisions can touch on conduct that competition regimes scrutinize where the firm holds a dominant position. Training for these audiences generally aims to convey that market leadership is lawful while certain uses of market power may not be, and to establish clear escalation paths to legal counsel.

Learning and development teams

Staff who build and deliver competition-law training use this term as a discrete training concept, one module within a broader compliance program rather than a standalone safeguard. They should frame it as awareness-building and note that authoritative determinations require qualified legal counsel and depend on the applicable jurisdiction.

Inside Abuse of Dominance

Market Dominance

A position of economic strength that enables an undertaking to behave to an appreciable extent independently of competitors, customers, and consumers. Dominance itself is not unlawful; it is the abuse of that position that competition authorities target. The threshold for what constitutes dominance varies by jurisdiction and is typically assessed through market share alongside other factors, so specific thresholds should be confirmed against the applicable legal regime.

Relevant Market Definition

The analytical exercise of delineating the product and geographic market within which dominance is assessed. Because a finding of dominance depends on how narrowly or broadly the market is defined, this step is foundational and often contested. Market definition methodology is jurisdiction-specific and a matter for competition-law analysis.

Abusive Conduct

The specific behaviors that convert lawful dominance into a violation. These are commonly categorized as exploitative abuses (such as excessive or unfair pricing that harms customers directly) and exclusionary abuses (such as predatory pricing, refusal to deal, tying, or exclusive dealing that forecloses competitors). Whether particular conduct is abusive is a legal determination that varies by jurisdiction.

Jurisdictional Framework

Abuse of dominance is addressed under different regimes in different jurisdictions, and the exact standards, terminology, and enforcement mechanisms differ accordingly. This entry does not equate any single national or regional standard with a universal rule; the applicable framework depends on where the conduct occurs and where its effects are felt. Practitioners should confirm the governing law and any specific citations against primary sources.

Compliance Program Relevance

For compliance and ethics teams, abuse of dominance is a risk area requiring awareness among commercially exposed personnel. Training on this topic is one component of a broader competition-compliance effort and does not by itself constitute a complete compliance program, which also includes risk assessment, policy, monitoring, and reporting channels.

Common questions

Answers to the questions practitioners most commonly ask about Abuse of Dominance.

Is abuse of dominance the same as simply being a large or successful company?

No. Holding a dominant market position is not itself unlawful under competition law regimes that recognize this concept. The relevant conduct is the abuse of that position through practices that harm competition or exploit market power. A company can grow through legitimate means and hold a substantial market share without engaging in abuse. Because the specific thresholds and prohibited conduct vary by jurisdiction, and because assessing dominance and abuse requires factual and legal analysis, this determination should be made with qualified competition counsel. This entry is educational and not a substitute for legal advice.

Is abuse of dominance an ethics issue or a compliance issue?

It sits primarily on the compliance side of the spectrum, because it concerns adherence to competition and antitrust laws that impose binding obligations with defined consequences in jurisdictions where the concept applies. That said, values-based judgment can play a role where conduct may be technically defensible but nonetheless raises fairness concerns that a company's ethics program addresses. The distinction matters for how the topic is framed in training and policy: as a legal obligation first, with ethical considerations layered on top. Because the applicable rules are jurisdiction-specific, treat this as a matter requiring qualified legal counsel.

How should abuse of dominance be addressed within a compliance program?

It is typically one topic within a broader competition or antitrust compliance area, which itself is one part of an overall compliance program. Addressing it usually involves several distinct components working together: risk assessment to identify where the organization may hold market power, policies and a code of conduct that set expectations, targeted training for personnel in higher-risk roles, and monitoring and auditing functions. A training module alone does not satisfy program obligations. The appropriate scope and design depend on the organization's markets, jurisdictions, and risk profile, and should be developed with qualified legal counsel.

Which employees should receive training on abuse of dominance?

Training is generally targeted based on risk rather than delivered uniformly. Personnel involved in pricing, sales, contracting, distribution arrangements, product bundling, and dealings with competitors or customers are commonly regarded as higher-priority audiences, as are relevant managers and leaders. The specific population depends on the organization's risk assessment and the markets in which it may hold a strong position. Targeted, role-relevant training is intended to support awareness of prohibited conduct, but it does not guarantee prevention of violations; outcomes depend on implementation and context.

What should a policy on abuse of dominance cover?

A policy typically explains the conduct that may raise concerns in jurisdictions where the concept applies, sets expectations for employees, and directs them to seek guidance from legal counsel before taking actions that could implicate the rules. It should make clear that the applicable obligations are jurisdiction-specific and that assessments of dominance and abuse are fact-dependent legal questions. A policy is a program component, not a complete safeguard, and it should be paired with training, escalation channels, and monitoring. Content should be developed and reviewed with qualified competition counsel because requirements vary by local law.

How can an organization monitor for potential abuse of dominance issues?

Monitoring and auditing are functions distinct from training and policy, and they may include reviewing pricing and commercial practices, contract terms, and market conduct in areas where the organization may hold significant market power, as well as maintaining escalation and reporting channels so concerns can surface. These activities are intended to help identify potential issues, but no monitoring approach guarantees detection or legal protection; effectiveness depends on scope, resourcing, and implementation. Because the legal standards are jurisdiction-specific, the design of monitoring efforts should be informed by qualified legal counsel.

Common misconceptions

Holding a dominant or large market position is itself illegal.

Dominance in itself is generally not unlawful. Liability arises from abusing that position through exploitative or exclusionary conduct. The distinction between having market power and misusing it is central to how these regimes operate.

Abuse of dominance is an ethics matter of general fairness rather than a legal obligation.

Abuse of dominance concerns adherence to binding competition laws with defined enforcement consequences, placing it firmly on the compliance side of the spectrum. While fair dealing may reflect ethical values, the prohibition on abusive conduct is a legal requirement, not merely aspirational conduct exceeding legal minimums.

A single global standard defines abuse of dominance the same way everywhere.

The concept is addressed under different jurisdictional frameworks with differing thresholds, terminology, and enforcement approaches. What qualifies as dominance or abuse in one jurisdiction may be assessed differently in another, so the governing law must be identified for any specific situation.

Best practices

Target competition-compliance training to personnel in commercially exposed roles, such as sales, pricing, and business development, since these functions are most likely to encounter conduct that could raise abuse-of-dominance concerns.

Frame training and internal guidance around the distinction between lawfully holding market power and engaging in abusive conduct, so staff understand that strong market positions are permissible while specific behaviors may not be.

Confirm the applicable jurisdictional framework, thresholds, and any regulatory citations against primary sources rather than assuming a single universal standard applies.

Position abuse-of-dominance training as one element within a broader competition-compliance program that also includes risk assessment, clear policy, monitoring, and reporting channels, rather than treating training as sufficient on its own.

Route questions involving market definition, dominance thresholds, or whether specific conduct is abusive to qualified legal counsel, given that these are legal determinations that vary by local law.

Use qualified language in training materials, describing measures as intended to support compliance rather than as guarantees of legal protection, since outcomes depend on implementation and context.