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Prima facie duties

Prima facie duties are moral obligations that count as binding unless a stronger duty in that situation overrides them. In Ethics, the idea helps explain why moral rules can conflict without becoming meaningless.

Last updated July 2026•Fiveable Content Team

What are prima facie duties?

Prima facie duties are moral duties that you normally ought to follow, but they can be outweighed by a stronger duty in a specific situation. In Ethics, this idea is tied most closely to W. D. Ross, who argued that morality is not just one rule or one master principle. Instead, you often face several real duties at once, and the right choice depends on which duty carries the most weight in that moment.

Ross’s view is useful because it matches how moral life actually feels. You might have a duty to tell the truth, but also a duty to protect someone from harm. You might owe gratitude to someone who helped you, but also owe justice to people being treated unfairly. Prima facie duties do not disappear when they conflict. They still count, but they do not all count equally in every case.

Ross identified several common duties, including fidelity, reparation, gratitude, justice, beneficence, self-improvement, and non-maleficence. Fidelity is about keeping promises. Reparation means making up for a wrong you caused. Gratitude means recognizing benefits you received. Justice asks you to give people what they deserve or are owed. Beneficence is the duty to help others, self-improvement is the duty to better yourself, and non-maleficence is the duty not to harm.

The phrase “prima facie” can be confusing because it does not mean “fake” or “optional.” It means a duty that is valid at first glance, before you look at the full situation. Once the situation is fully considered, one duty may become your actual duty, which is the duty you should follow after weighing the conflict.

That is why prima facie duties are often used in critiques of rigid deontological ethics. Strict rule-based ethics can sound neat until two duties clash. Ross’s approach says moral reasoning is more like balancing serious obligations than following a checklist. You are not ignoring rules, you are deciding which duty has the strongest claim in the case in front of you.

Why prima facie duties matter in ETHICS

Prima facie duties matter because they give you a way to talk about moral conflict without pretending that every rule is absolute. In Ethics, that makes them a direct response to one of the biggest problems in deontological ethics: what do you do when two duties point in different directions?

This concept is especially useful when a class discusses cases like lying to protect someone, breaking a promise to prevent harm, or choosing between fairness and compassion. A strict rule can make those situations look simple on paper, but prima facie duties show why the real decision is harder. You still recognize the duty to tell the truth or keep a promise, but you also have to ask whether another duty, like non-maleficence or beneficence, is stronger here.

The idea also sharpens your reading of moral arguments. If a philosopher says “always do X,” you can ask whether the claim makes room for conflicting obligations. If a case study seems to involve two good but competing actions, prima facie duties give you the language to explain that tension clearly instead of treating one side as automatically wrong.

In class discussion and essays, this term helps you compare Ross with more rigid duty-based ethics and with consequentialist thinking. You are not just naming a theory, you are showing how it handles real moral pressure. That makes the concept useful any time you need to explain why a rule may apply, but not win.

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How prima facie duties connect across the course

Deontological Ethics

Prima facie duties are part of the deontological tradition because they focus on duty rather than results. The difference is that Ross’s version is less rigid than strict rule-based deontology. Instead of treating every duty as absolute, it allows you to weigh duties against each other when moral conflict shows up.

Absolute Duty

An absolute duty is supposed to apply no matter what the situation looks like. Prima facie duties are the opposite of that kind of claim. They matter most when you want to explain why a moral rule can be serious and still be overridden by a stronger duty in context.

Actual Duty

Prima facie duties are the duties that count at first glance, while the actual duty is the one you should finally follow after weighing the situation. This pairing helps you explain how Ross thinks moral reasoning works in practice. The distinction is what keeps the theory from becoming a simple rule list.

Moral Conflict

Moral conflict is the problem prima facie duties are built to handle. A promise, a truth-telling duty, and a duty to prevent harm can all pull in different directions at once. Ross’s framework gives you a way to describe that clash without saying one side was never a real duty.

Are prima facie duties on the ETHICS exam?

A short-answer question or essay prompt may give you a dilemma and ask which duty matters most. Your job is to identify the competing prima facie duties, explain why each one counts, and then justify which duty becomes the actual duty in that case. A good response names the conflict clearly, such as truth-telling versus preventing harm, and then explains the weighing process instead of treating one rule as automatically stronger.

When you see a passage on Ross, look for clues about promises, harm, gratitude, fairness, or self-improvement. If the prompt asks how his view critiques rigid deontology, explain that prima facie duties keep morality flexible enough to handle exceptions without abandoning duty altogether.

Prima facie duties vs Actual Duty

Prima facie duties are the duties that count before you weigh the situation, while actual duty is the final duty you should follow once the conflict is judged. People confuse them because both are real duties in Ross’s theory, but they work at different stages of moral reasoning.

Key things to remember about prima facie duties

  • Prima facie duties are moral obligations that matter unless a stronger duty overrides them in a specific situation.

  • Ross’s view explains why ethics can involve more than one true duty at the same time.

  • The theory is useful when honesty, promise-keeping, fairness, or harm prevention come into conflict.

  • Prima facie duties are not fake duties or optional rules, they are real duties that may lose out in context.

  • The idea gives you a middle ground between strict rule-following and pure outcome-based thinking.

Frequently asked questions about prima facie duties

What is prima facie duties in Ethics?

Prima facie duties are moral duties that count as binding unless a stronger duty in the situation overrides them. In Ethics, the term is tied to W. D. Ross and his idea that people often face several genuine obligations at once. The theory is built for moral conflict, not simple one-rule cases.

How are prima facie duties different from actual duty?

Prima facie duties are the obligations that matter at first glance, before you compare them. Actual duty is the choice you make after weighing all the duties in the situation. That distinction matters because Ross thinks more than one duty can be real, even if only one should guide action in the end.

What are examples of prima facie duties?

Ross listed duties such as fidelity, reparation, gratitude, justice, beneficence, self-improvement, and non-maleficence. For example, you may have a duty to tell the truth, but also a duty not to harm someone by revealing dangerous information. The point is that both duties count, even if one wins out.

Why do prima facie duties matter in deontological ethics?

They show a weakness in rigid deontological ethics, which can treat rules as if they never clash. Prima facie duties keep the focus on duty while admitting that real life is messy. That makes Ross’s approach more flexible than absolute rule-based ethics.