What Constitutes a Breach of Contract

So, you’ve got a contract. That’s great! But what happens when one person doesn’t hold up their end of the bargain? We’re talking about a contract breach, and it’s a pretty common issue. It basically means someone failed to do what they promised in the agreement. This can range from small slip-ups to major failures that completely mess up the whole deal. Understanding what counts as a breach is super important, whether you’re the one who got shortchanged or the one who messed up. Let’s break down what a contract breach really means and what can happen because of it.

Key Takeaways

• A contract breach happens when someone doesn’t do what they agreed to in a contract. This can be a big deal or a small one.
• For a contract to be valid, you need things like an offer, acceptance, and something of value exchanged. If these aren’t right, the contract might not hold up.
• When a contract is broken, the law tries to fix things, usually by making the person who messed up pay for the losses or, in some cases, forcing them to do what they promised.
• There are different ways to fix a contract breach, like paying money for direct losses (compensatory damages) or for foreseeable indirect losses (consequential damages).
• Sometimes, instead of money, a court might order someone to actually do what the contract said (specific performance) or cancel the whole agreement (rescission).

Understanding Contractual Obligations

Before we can talk about what happens when a contract goes wrong, we really need to get a handle on what a contract is and what it means to be obligated under one. Think of a contract as a promise, but one that the law can back up. It’s not just a casual agreement; it’s a legally binding arrangement between two or more parties.

Elements of A Valid Contract

For any agreement to be considered a solid, enforceable contract, a few key things need to be in place. Without these, you might just have a handshake deal that’s hard to prove or enforce. The main ingredients are:

• Offer: One party has to propose specific terms to another.
• Acceptance: The other party has to agree to those exact terms, no ifs, ands, or buts.
• Consideration: This is the "what’s in it for me?" part. Each side has to give something of value, whether it’s money, goods, services, or even a promise to do or not do something.
• Mutual Assent: Both parties need to genuinely agree to the same terms. It’s like a meeting of the minds.
• Capacity: The people making the contract need to be legally able to do so – usually meaning they’re of legal age and sound mind.
• Lawful Purpose: The contract can’t be for something illegal. You can’t have a contract to commit a crime, for example.

Express Versus Implied Contracts

Contracts can come about in different ways. Sometimes, it’s all laid out very clearly. Other times, it’s more subtle.

• Express Contracts: These are the straightforward ones. The terms are explicitly stated, either in writing or spoken aloud. Think of a lease agreement or a written employment contract. Everything is spelled out.
• Implied Contracts: These aren’t written down or spoken, but they still exist based on the actions and circumstances of the parties involved. If you go to a doctor, you implicitly agree to pay for their services, even if you never signed anything. The law infers the agreement from your conduct.

Bilateral And Unilateral Agreements

Contracts also differ in how the promises are exchanged:

• Bilateral Contracts: This is the most common type. It involves a two-way street of promises. Party A promises to do something, and Party B promises to do something in return. Most sales agreements are bilateral – you promise to pay, and the seller promises to give you the goods.
• Unilateral Contracts: These are a bit different. One party makes a promise, but it’s only in exchange for the performance of an action by the other party, not a return promise. A classic example is a reward offer: "I’ll pay $100 to whoever finds my lost dog." The promise to pay is only fulfilled if someone actually finds and returns the dog. Until then, there’s no obligation on either side.

Understanding these basic building blocks is the first step to grasping what happens when those obligations aren’t met. It sets the stage for understanding what a breach actually is.

Defining A Contract Breach

So, what exactly counts as a breach of contract? Basically, it’s when one party doesn’t do what they promised to do in the agreement. It’s not always a huge, dramatic event; sometimes it’s a small slip-up, but it’s still a failure to meet the agreed-upon terms. A breach occurs when a party fails to fulfill their contractual duties as outlined in the agreement.

Failure To Fulfill Contractual Duties

This is the most straightforward type of breach. It means a party simply didn’t perform their side of the bargain. This could be anything from not delivering goods on time, not paying for services rendered, or not completing a project as specified. It’s a direct violation of the promises made.

Material Versus Minor Breaches

Not all breaches are created equal, and the law recognizes this. A material breach is a big deal. It’s so significant that it defeats the whole purpose of the contract. Think of it like ordering a custom-built wedding cake and receiving a plain sheet cake instead – the core purpose of the contract is gone.

A minor breach, on the other hand, is more of a technicality. It’s a partial nonperformance or a slight deviation from the terms, but it doesn’t fundamentally undermine the contract’s purpose. For example, if a contractor finishes a house a day late, that’s likely a minor breach, not a material one.

Anticipatory Breach Of Contract

This one’s a bit different. An anticipatory breach, also called anticipatory repudiation, happens before the performance is even due. It’s when one party clearly indicates, either through words or actions, that they won’t be able to or won’t intend to fulfill their contractual obligations. It’s like getting a heads-up that the other shoe is about to drop, even though it hasn’t yet.

This early warning allows the non-breaching party to take steps to mitigate potential losses, rather than waiting for the actual date of performance to pass and then dealing with the fallout. It’s a proactive measure that can save a lot of trouble down the line.

Here’s a quick look at the differences:

Breach Type	Description
Material Breach	Substantially defeats the contract’s purpose; a major failure.
Minor Breach	Partial or technical nonperformance; doesn’t ruin the contract’s core goal.
Anticipatory Breach	Indication of non-performance before the due date.

Consequences Of A Contract Breach

When one party doesn’t hold up their end of a deal, it’s called a breach of contract. This isn’t just a minor hiccup; it can really mess things up for the other person involved. The main point is that the contract’s purpose is undermined, and the non-breaching party suffers some kind of loss.

Think about it like this: you hire someone to build a deck, and they just… don’t show up. Or maybe they build it, but it’s wobbly and unsafe. That’s a breach. The purpose of the contract was to get a safe, usable deck, and that purpose is now gone. The consequences can range from inconvenient to financially devastating, depending on what the contract was for and how badly it was broken.

Here’s a breakdown of what can happen:

• Impact on Contractual Purpose: The most immediate consequence is that whatever the contract was supposed to achieve is now in jeopardy. If you contracted for a specific service or product, and it’s not delivered or is delivered incorrectly, you’re left without what you paid for or agreed to receive.
• Legal Ramifications of Nonperformance: This is where things can get serious. The party who didn’t breach their obligations might be able to take legal action. This could mean suing for damages to cover their losses, or in some cases, asking a court to force the other party to do what they promised.

The severity of the breach plays a big role in what happens next. A small, technical slip-up might not sink the whole deal, but a major failure to perform can completely derail the agreement and lead to significant legal battles.

Remedies For Contractual Violations

When one party doesn’t hold up their end of a deal, the law steps in to try and make things right. This is where remedies for contractual violations come into play. The main idea behind these remedies is to put the party who was wronged back into the position they would have been in if the contract had been fulfilled. It’s not about punishment, but about compensation and fairness.

Compensatory Damages For Direct Losses

These are the most common type of remedy. Compensatory damages are meant to cover the actual, direct losses a party suffered because of the breach. Think of it as replacing what was lost. For example, if you hired someone to paint your house for $5,000, and they backed out, you might have to hire someone else for $7,000. The $2,000 difference would be your compensatory damages. It’s about making you whole for the immediate financial hit.

Consequential Damages For Indirect Losses

Sometimes, a breach doesn’t just cause direct financial loss; it can also lead to other, indirect problems. These are called consequential damages. For these to be awarded, they generally need to have been foreseeable by both parties at the time the contract was made. For instance, if a supplier fails to deliver a crucial component for your manufacturing business on time, and that delay causes you to miss out on a major order, the lost profits from that order could be considered consequential damages. It’s a bit more complex than direct losses, as you have to prove the connection and foreseeability.

Liquidated Damages Provisions

Instead of waiting to figure out damages after a breach, parties sometimes agree on a specific amount of money to be paid if a breach occurs. This is called a liquidated damages provision. It’s essentially a pre-set penalty for breaking the contract. However, courts will only enforce these if the amount is a reasonable estimate of the potential damages and not just a way to punish the breaching party. If the amount is seen as excessive or punitive, a court might throw it out.

Nominal Damages Recognition

What happens if a contract is breached, but the non-breaching party didn’t actually suffer any significant financial loss? In these situations, a court might award nominal damages. This is usually a very small sum of money, like a dollar or two. The purpose isn’t to compensate for a loss, but to acknowledge that a legal wrong (the breach) did occur. It’s a way of recognizing that a right was violated, even if there wasn’t a measurable financial impact. It’s a bit like a symbolic victory for the wronged party.

The goal of contract remedies is to restore the injured party to the position they would have occupied had the contract been fully performed. This principle guides the court’s decision-making process when addressing breaches, aiming for fairness rather than punitive action. Understanding these remedies is key to navigating contract law principles.

Here’s a quick look at how damages might be categorized:

• Compensatory: Covers direct losses.
• Consequential: Covers foreseeable indirect losses.
• Liquidated: Pre-agreed amount for breach.
• Nominal: Small amount to acknowledge a breach without significant loss.

It’s important to remember that the specific remedies available can depend on the type of contract, the nature of the breach, and the laws of the jurisdiction. Sometimes, monetary damages just don’t cut it, and that’s where other types of relief come into play, which we’ll explore next.

Equitable Relief In Contract Disputes

Sometimes, when a contract gets broken, just throwing money at the problem doesn’t quite cut it. That’s where equitable relief comes in. It’s a way for courts to step in and make things fair when monetary damages just aren’t enough to fix the situation. Think of it as a judge saying, ‘Okay, money won’t solve this, so we need to do something else.’

Specific Performance Mandates

This is probably the most well-known type of equitable relief. When a contract is breached, and the subject matter is unique – like a specific piece of land or a rare collectible – a court might order specific performance. This means the party who broke the contract is legally required to actually go through with their end of the bargain. It’s not about paying damages; it’s about making them do what they promised. This is often seen in real estate deals where each property is considered one-of-a-kind. You can’t just buy another identical house down the street, right?

Rescission To Cancel Agreements

Rescission is like hitting the undo button on a contract. If a contract was formed under circumstances that make it unfair or invalid – maybe there was fraud, a significant mistake, or duress – a court can order rescission. This cancels the contract entirely, and the goal is to put both parties back in the position they were in before the contract was ever signed. It’s not about damages; it’s about unwinding the whole deal.

Restitution To Prevent Unjust Enrichment

Restitution is all about fairness and making sure no one gets unfairly enriched at another’s expense. If one party has received a benefit from the other party due to a contract (even if that contract is later found to be invalid or is breached), restitution requires them to give that benefit back. The idea is to prevent one person from profiting from a situation where they shouldn’t have. It’s a way to correct imbalances and ensure that what was gained unfairly is returned.

Equitable remedies are powerful tools in contract law, used when the standard monetary awards fall short of achieving justice. They focus on compelling actions or undoing agreements to restore fairness rather than simply compensating for financial loss. These remedies are discretionary, meaning a judge decides if they are appropriate based on the specific circumstances of the case. Equitable relief is not granted lightly.

Here’s a quick look at when these might be considered:

• Specific Performance: When the subject of the contract is unique (e.g., real estate, rare art).
• Rescission: When the contract formation involved fraud, misrepresentation, duress, or a significant mutual mistake.
• Restitution: When one party has received a benefit that would be unjust to retain after a breach or invalidation of the contract.

Factors Affecting Contract Enforceability

Statute Of Frauds Requirements

So, you’ve got an agreement, and it seems pretty solid. But here’s the thing: not all contracts are created equal when it comes to being legally binding. One major hurdle is the Statute of Frauds. Basically, this is an old legal idea that says certain types of contracts have to be in writing to be enforceable. If you don’t have it in writing, a court might just say, "Sorry, can’t help you here." This usually applies to big stuff like agreements involving real estate, contracts that can’t possibly be finished within a year, or promises to pay someone else’s debt. It’s not just a suggestion; it’s a requirement that can make or break your ability to enforce a deal.

Parol Evidence Rule Limitations

Let’s say you’ve signed a contract, and it looks like the final word on your deal. The Parol Evidence Rule comes into play here. It generally stops you from using outside evidence – like conversations you had before signing or early drafts – to try and change or contradict what’s written in that final, signed document. Think of the written contract as the main event. Anything that happened before or during the signing that isn’t in that final version usually can’t be brought in to mess with the terms. There are exceptions, of course, like if there was fraud or a mistake, but as a general rule, what’s written is what counts.

Contract Interpretation Principles

When a dispute pops up, and people can’t agree on what a contract actually means, courts have to step in and figure it out. They don’t just guess, though. There are some guiding principles. Usually, they start with the plain language of the contract itself. If the words are clear, that’s often the end of the story. But if there’s ambiguity, they might look at the context of the agreement, what the parties were trying to achieve, and even how they acted after signing. The goal is always to figure out what the parties intended when they made the deal. It’s like being a detective, piecing together clues to understand the original plan.

Here’s a quick rundown of how courts often approach interpretation:

• Plain Meaning: If the words are straightforward, they mean what they say.
• Context Matters: The surrounding circumstances and the contract’s purpose are considered.
• Course of Performance: How the parties have acted under the contract can show their understanding.
• Industry Standards: Common practices in the relevant business might be relevant.

Sometimes, a contract might seem clear on the surface, but when you dig into the specifics of the situation, its true meaning becomes a bit murky. Courts try to avoid making assumptions and instead look for evidence that reflects the actual understanding between the people who signed it.

Defective Contracts And Their Impact

Sometimes, contracts aren’t quite right from the start. These aren’t your typical disagreements over performance; these are issues with the contract itself. When a contract has a fundamental flaw, it can be considered defective. This doesn’t always mean the whole deal is off, but it certainly complicates things.

Void Versus Voidable Contracts

It’s important to know the difference between a void and a voidable contract. A void contract is basically a non-starter. It’s treated as if it never existed because it has a serious legal defect, like being for an illegal purpose. On the other hand, a voidable contract is one where at least one party has the option to back out. Think of it as having a built-in escape hatch, but only for one side.

Here’s a quick breakdown:

• Void Contracts:
  • Considered invalid from the moment they were created.
  • Cannot be enforced by either party.
  • Examples: Contracts for illegal activities (like drug trafficking) or contracts with someone legally declared incompetent.
• Voidable Contracts:
  • Initially valid and enforceable.
  • One party has the legal right to cancel or affirm the contract.
  • Examples: Contracts entered into by a minor, or contracts where one party was under duress or misled.

Mistakes In Contract Formation

Mistakes happen, and in contract law, they can sometimes undo an agreement. These mistakes can be mutual, meaning both parties were mistaken about a key fact, or unilateral, where only one party made a mistake. If the mistake is significant enough and affects the core of the agreement, a court might step in. For instance, if both parties thought they were buying a specific piece of land, but it turned out to be a different parcel entirely, that’s a big deal.

The impact of a mistake often hinges on whether it was a mistake of fact or a mistake of law, and whether the mistaken party could have reasonably avoided the error. Courts are generally more inclined to grant relief for significant factual errors that go to the heart of the bargain.

Fraudulent Inducement Of Agreement

This is where things get really messy. Fraudulent inducement happens when one party tricks the other into entering a contract. This isn’t just a simple misunderstanding; it involves intentional deception. The trickster makes a false statement about something important, knowing it’s false, and does it specifically to get the other person to sign on the dotted line. If fraud is proven, the contract is usually voidable by the deceived party.

Common elements of fraudulent inducement include:

1. A false representation of a material fact.
2. Knowledge that the representation was false (or reckless disregard for the truth).
3. Intent to induce the other party to rely on the false statement.
4. Justifiable reliance by the deceived party on the false statement.
5. Resulting damages to the deceived party.

Mitigating Damages After A Breach

So, you’ve found yourself on the receiving end of a contract breach. It’s a frustrating situation, no doubt. But before you start thinking about all the money you’ve lost, remember that the law expects you to take steps to lessen those losses. This isn’t about letting the breaching party off the hook; it’s about being sensible and not letting damages pile up unnecessarily.

Duty to Minimize Losses

This is a big one. When a contract is broken, the party who didn’t breach has a legal obligation, often called a duty to mitigate. This means you can’t just sit back and watch the damages grow if there are reasonable actions you can take to reduce them. For example, if a supplier fails to deliver goods on time, you can’t just let your production line halt indefinitely and then sue for months of lost profits. You’d likely need to look for an alternative supplier, even if it’s a bit more expensive or less convenient.

Reasonable Steps for Mitigation

What counts as "reasonable" can depend on the specifics of the situation. Courts look at what a prudent person would do in similar circumstances. This could involve:

• Seeking alternative sources: If a service provider backs out, you’d typically need to find another qualified provider.
• Accepting partial performance: If a contractor completes only part of the job, you might need to accept that part and then seek damages for the incomplete portion.
• Adjusting business operations: This might mean temporarily scaling back operations or finding different ways to meet customer demand.
• Not incurring excessive costs: The steps you take to mitigate shouldn’t be unreasonably expensive or burdensome. You’re not expected to go bankrupt trying to fix someone else’s mistake.

The idea behind the duty to mitigate is to prevent the injured party from accumulating damages that could have been avoided through reasonable effort. It’s a principle that encourages practical solutions and discourages excessive claims.

Failing to take reasonable steps to mitigate your losses can impact the amount of damages a court might award you. If it’s clear you could have reduced your losses but didn’t, a judge might reduce your compensation accordingly. It’s a key consideration when assessing the financial fallout from a broken agreement.

Third-Party Rights In Contracts

Sometimes, contracts aren’t just between the two people who signed them. Other folks can get involved, and that’s where third-party rights come into play. It’s like when you buy a house, and the previous owner had a service contract for the heating system – that contract might have terms that now affect you, the new owner.

Assignment Of Contractual Rights

This is when one of the original parties to a contract, let’s call them the ‘assignor,’ transfers their rights or benefits under that contract to someone else, the ‘assignee.’ Think about a freelance writer who has a contract with a client to write a series of articles. If the writer decides to take a long vacation and can’t finish, they might assign their right to payment for the completed articles to another writer who will finish the job. The original client still has to pay, but now they pay the assignee. However, not all rights can be assigned. If the contract is personal in nature, like a portrait commission, it usually can’t be assigned without everyone’s agreement.

Delegation Of Contractual Duties

This is the flip side of assignment. Here, a party to a contract (the ‘delegator’) transfers their responsibilities or duties to another person (the ‘delegatee’). So, going back to our freelance writer, if they had a duty to research and fact-check, they might delegate that specific task to an assistant. The key thing here is that the original party, the delegator, usually remains responsible if the delegatee messes up. It’s only if the contract specifically allows for the delegation of duties without the original party’s continued liability that they might be off the hook. Most contracts don’t allow delegation if the duty is personal or requires specific skills.

Third-Party Beneficiary Enforcement

This is a bit different. A third-party beneficiary is someone who isn’t a party to the contract but is specifically named or intended to benefit from it. For example, if you take out a life insurance policy and name your child as the beneficiary, your child didn’t sign the policy, but they have a right to the payout. If the insurance company doesn’t pay out, your child could potentially sue to enforce the contract, even though they weren’t the one who bought the policy. There are two main types: intended beneficiaries, who have legal rights, and incidental beneficiaries, who might benefit but have no legal standing to enforce the contract. The intention of the original parties is what really matters here.

It’s important to remember that when third parties get involved, things can get complicated. Courts look closely at the original contract language and the intent of the parties to figure out who has rights and who has responsibilities. If you’re dealing with a contract that might involve others, it’s always a good idea to get some legal advice to make sure everyone’s on the same page and to avoid future disputes.

Discharge Of Contractual Obligations

Performance and Agreement

When parties enter into a contract, the ultimate goal is usually for both sides to fulfill their end of the bargain. This is what we call performance. It means doing exactly what the contract says you’ll do, within the agreed-upon timeframe and according to the specified terms. Think of it like this: if you hire someone to paint your house, and they paint it the agreed-upon color, using the agreed-upon paint, and finish by the deadline, they’ve performed their obligation. Once all parties have fully performed, the contract is considered discharged. It’s done, finished, and no longer binding. Sometimes, parties might decide they don’t want to go through with the original plan anymore, even if they haven’t fully performed. In such cases, they can mutually agree to end the contract. This is a discharge by agreement. It’s like both people saying, ‘You know what, let’s just call it quits on this.’ This agreement should ideally be in writing to avoid any confusion later on.

Impossibility and Frustration of Purpose

What happens if something totally unexpected comes up that makes fulfilling the contract impossible or pointless? That’s where impossibility and frustration of purpose come in. Impossibility means it’s genuinely impossible for anyone to perform the contract. For example, if a contract is for a specific concert hall, and that hall burns down before the concert, the contract is impossible to perform. Frustration of purpose is a bit different. It’s when the main reason for entering the contract is completely destroyed by an unforeseen event, even if performance is technically still possible. Imagine you rent a balcony specifically to watch a parade, and then the parade is canceled. Even though you could still technically use the balcony, the whole point of renting it is gone. In these situations, the contract might be discharged because the underlying basis for the agreement no longer exists. It’s not about one party backing out; it’s about circumstances beyond anyone’s control making the contract unworkable.

Discharge by Operation of Law

Sometimes, a contract can end not because of what the parties did or didn’t do, but because of legal rules. This is discharge by operation of law. It can happen in a few ways. For instance, if a contract becomes illegal to perform due to a new law being passed, it’s discharged. Another common way is through bankruptcy. If a party declares bankruptcy, their contractual obligations might be discharged by the court. Also, if there’s a significant alteration to the contract that wasn’t agreed upon by both parties, it might be discharged. Think of it as the law stepping in to say the contract is no longer valid or enforceable. It’s a bit like a legal reset button being pushed due to external legal factors.

Here are some common ways a contract can be discharged by operation of law:

• Bankruptcy: A party’s obligations may be discharged through bankruptcy proceedings.
• Illegality: If a new law makes the contract’s performance illegal, the contract is discharged.
• Material Alteration: Unauthorized changes to the contract’s terms can lead to its discharge.
• Statute of Limitations: If the time limit to sue for a breach expires, the contract is effectively discharged from legal enforcement.

It’s important to remember that discharge doesn’t mean a breach never happened. If a breach occurred before the contract was discharged, the non-breaching party might still have rights to seek remedies for that past breach.

Wrapping Up: What a Breach Means

So, we’ve talked about what makes a contract a contract and what happens when someone doesn’t hold up their end of the deal. Basically, a breach of contract isn’t just about forgetting a deadline; it’s when a party fails to do what they promised in the agreement. Whether it’s a big problem that ruins the whole point of the contract or a smaller hiccup, the law has ways to sort things out. The goal is usually to make the person who was wronged whole again, often through money, but sometimes by making the other party do what they were supposed to. Understanding these basics helps everyone keep agreements fair and clear.

Frequently Asked Questions

What makes a contract official and binding?

For a contract to be official, it needs a few key things. First, someone has to make a clear offer, and the other person must accept it exactly as it’s offered. Then, both sides need to give something of value, like money, goods, or a promise to do something. Both people must be old enough and mentally sound to agree, and the whole deal has to be for something legal. If all these pieces are in place, you’ve got a solid contract.

What’s the difference between a written contract and one that’s just understood?

A written contract is just what it sounds like – all the terms are written down and signed. An understood contract, on the other hand, happens when people’s actions or the situation show they’ve agreed to something, even if they didn’t write it down. Think of buying coffee; you don’t sign a paper, but your actions show you agree to pay for it. Both can be legally binding, but written ones are usually easier to prove.

What does it mean if someone ‘breaches’ a contract?

When someone breaches a contract, it means they didn’t do what they promised to do according to the agreement. It’s like breaking a promise in a formal deal. This could be failing to deliver goods, not paying on time, or not completing a service. It’s essentially a failure to follow through on the agreed-upon terms.

Are all contract breaches treated the same way?

Not at all! Breaches can be big or small. A ‘material breach’ is a serious one that ruins the whole point of the contract. For example, if a builder doesn’t build a house at all, that’s a major problem. A ‘minor breach’ is less serious, like being a day late with a small payment. The type of breach matters a lot when figuring out what happens next.

What happens if someone knows they can’t keep their contract promise before the due date?

If someone clearly signals they won’t or can’t fulfill their end of the deal before it’s even time to perform, that’s called an ‘anticipatory breach.’ It’s like them saying, ‘I’m not going to do this,’ even though the deadline hasn’t arrived yet. This allows the other party to take action sooner rather than later.

What can happen to someone who breaks a contract?

When a contract is broken, the person who was harmed might be able to get something called ‘remedies.’ The goal of these remedies is usually to put the injured party back in the position they would have been in if the contract hadn’t been broken. This can involve getting money to cover losses or, in some rare cases, forcing the other person to do what they promised.

Can a court force someone to do what they promised in a contract?

Sometimes, yes. If the money you’d get from a broken contract wouldn’t really make up for the loss, a court might order ‘specific performance.’ This means the person has to actually do the thing they agreed to do in the contract. This usually happens in unique situations, like with real estate deals where each property is different.

If I’m the one who was wronged by a contract breach, do I have to try and lessen my losses?

Yes, you generally do. This is called the ‘duty to mitigate.’ It means you can’t just let your losses pile up and expect the other person to pay for everything. You have to take reasonable steps to minimize the damage caused by the breach. For example, if a supplier doesn’t deliver, you should try to find another supplier reasonably quickly rather than waiting and losing more business.