Breach of Contract Between Businesses: What Counts, What to Prove, and What to Do First

This article is for general informational purposes only and is not legal advice, does not create an attorney-client relationship, and should not be relied on as a substitute for advice from qualified counsel about your specific situation. If you have questions about how these issues apply to your business, you should consult with a licensed attorney in your jurisdiction.

Most business disputes are framed, fairly or not, as breach of contract. A customer fails to pay. A supplier misses a delivery. A vendor delivers something that does not meet specification. A counterparty walks away from a deal it agreed to. In each case, the instinct is to call it a breach and start thinking about remedies. The legal reality is more specific than that, and understanding what actually counts as a breach, what you would need to prove, and what to do in the first hours and days after the problem surfaces tends to shape the outcome more than anything that happens later.

This post walks through the legal framework, the practical first steps, and the common mistakes that weaken otherwise strong claims.

What Actually Counts as a Breach

A breach of contract occurs when one party fails to perform an obligation the contract required, without a legal excuse for the nonperformance. That sounds simple, but the operative phrase is “the obligation the contract required.” Many disputes that feel like breaches turn out, on close reading of the agreement, to be something else: a difference of interpretation, a permitted variance, or a failure of a condition that was never actually promised.

Breaches generally fall into a few categories worth distinguishing:

• Material breach. A failure significant enough that it goes to the heart of the contract and gives the non-breaching party the right to suspend performance, terminate the agreement, and pursue damages. Not every breach is material; a minor failure that does not deprive the other side of what they bargained for usually is not.

• Minor or partial breach. A failure that gives the non-breaching party the right to damages but does not justify suspending performance or terminating the contract. The contract continues and the remedy is compensation for the specific shortfall.

• Anticipatory breach. The other party clearly indicates, by words or conduct, that they will not perform when performance comes due. The non-breaching party can typically treat the contract as breached without waiting for the deadline to pass.

• Failure of a condition versus failure of a promise. Some contract provisions are conditions to a party’s obligation, meaning an event that must occur before that party’s duty to perform ever arises. Other provisions are promises, meaning commitments the party has undertaken as contractual duties. If a condition is not satisfied, the other party’s corresponding obligation may never come due, so they are excused from performance but may have no damages claim based solely on the non‑occurrence of that condition. By contrast, if a party fails to perform a promise when due and without excuse, that is a breach that gives rise to a damages claim. Whether a clause functions as a condition or a promise is determined by the contract’s drafting and can be outcome‑determinative.

The category of breach matters because it determines what remedies are available, whether you can terminate, and what obligations you have during the dispute. The first task in any breach analysis is identifying which kind of breach you are actually dealing with.

The Elements You Would Need to Prove

To prevail on a breach of contract claim under Michigan law, a business generally needs to establish four elements: the existence of a valid contract, the terms the contract required, the other party’s failure to perform those terms, and damages caused by that failure. Each element requires its own proof, and weakness in any of the four can defeat an otherwise meritorious claim.

A valid contract 

Most commercial agreements are reduced to writing, but oral contracts and contracts formed through course of dealing or exchanged purchase orders can also be enforceable. Where the relationship is governed by layered documents, including master agreements, purchase orders, and incorporated terms, identifying which terms actually apply requires careful review of how the documents fit together.

What the contract required

This is where most breach disputes are actually fought. The contract has to be read as a whole, in light of any course of dealing or trade usage that informs its interpretation. Ambiguous provisions can be interpreted against the drafter, and parol evidence rules can limit what extrinsic evidence is admissible. The question is not what you thought the contract required; it is what the contract actually required when read by someone with no prior involvement in the deal.

The other party’s failure to perform

Establishing the failure requires evidence of what was supposed to happen and what actually happened. Documentation that captures specifications, delivery requirements, payment terms, and communications between the parties is the foundation of this element. A claim that rests on memory or assumption rather than records is significantly harder to prove.

Damages caused by the breach

Even where a breach is clear, recovery requires proving that the breach caused identifiable financial harm and quantifying that harm. Lost profits, replacement costs, cover costs (the cost of buying substitute goods or services), and consequential damages may all be recoverable, but each comes with its own evidentiary and contractual limitations. Many contracts cap damages, exclude certain categories such as consequential or punitive damages, and require notice before damage claims can be made.

Sales of Goods: A Different Framework

Contracts for the sale of goods are governed in Michigan by Article 2 of the Uniform Commercial Code, codified at MCL 440.2101 and following. The UCC applies its own framework for formation, performance, breach, and remedies that overlays the general common law of contracts. For manufacturers, distributors, and any business buying or selling goods, that distinction matters in several practical ways.

• The UCC recognizes implied warranties of merchantability and fitness for a particular purpose, which can create liability even where the written contract is silent. Those warranties can be disclaimed, but only in specific ways the statute defines.

• The UCC has its own rules for what constitutes acceptance of goods, when a buyer can reject nonconforming goods, and how revocation of acceptance works after the fact.

• Remedies under the UCC include cover, market-price damages, and incidental and consequential damages, each with its own elements and timing requirements.

• Long-term supply arrangements are often structured as requirements contracts, output contracts, or release-by-release purchasing relationships under Article 2, and Michigan courts have specific approaches to enforcing them.

If the relationship involves the sale of goods rather than pure services, the UCC framework is the starting point, and analyzing a breach without accounting for it can lead to a misread of the situation.

What to Do First When You Believe There Has Been a Breach

The first hours and days after a breach surfaces tend to shape the rest of the dispute. The right first steps are usually not what the instinct says.

Pull the contract and read it carefully before responding

Before sending a strongly worded email or making demands, review the actual contract. Confirm what it required, whether the failure is genuinely a breach, whether notice or cure provisions need to be followed, and what remedies are available. Many breach disputes start with positions that the contract does not support, which becomes a problem once the other side’s lawyer reads the same document.

Preserve the record

Treat the situation as one that may eventually be reviewed by a court or arbitrator. That means no deleting emails, no cleaning up shared drives, and no informal conversations that replace written records. Send a brief internal hold notice to anyone who may have relevant documents or communications.

Comply with notice and cure provisions

Many contracts require written notice of a default and a defined opportunity to cure before the non-breaching party can exercise termination or damage remedies. Skipping those steps, even when the breach is clear, can be used to argue that you waived rights or breached the contract yourself.

Mitigate damages

A party claiming damages has a legal duty to take reasonable steps to limit the harm caused by the breach. Failing to mitigate can reduce or eliminate recoverable damages even where the breach is established. Document the mitigation efforts as they happen.

Designate one person to communicate

Mixed messaging from multiple employees is one of the most common ways businesses damage their position early in a contract dispute. Route external communications through a single designated contact, ideally working in coordination with counsel.

Common Mistakes That Weaken Otherwise Strong Claims

• Continuing to perform without reserving rights. If you keep delivering, accepting performance, or making payments after a breach without formally reserving your rights in writing, you may be deemed to have waived the breach or modified the contract. Continued performance is sometimes necessary, but it should be paired with written notice that you are not waiving the underlying claim.

• Making admissions in early communications. Statements made before the contract has been carefully reviewed often turn out to be inaccurate or incomplete. Those statements become exhibits.

• Missing the statute of limitations. Under Michigan law, the limitations period for breach of contract claims involving the sale of goods is generally four years (MCL 440.2725), and the period for most other written contract claims is generally six years (MCL 600.5807(9)). The clock starts running on the date of breach, and waiting too long can bar an otherwise valid claim.

• Ignoring the dispute resolution clause. Many contracts require arbitration, mediation as a first step, or specific forum and governing law. Filing in the wrong forum, or skipping a required pre-suit step, can delay or undermine your claim.

• Overstating damages. Inflated damage claims invite scrutiny and undermine credibility. Damages built on documentation, calculation methodology, and reasonable assumptions hold up better than damages built on optimism.

When Involving Counsel Early Pays Off

Not every breach requires immediate legal involvement. A minor late payment from a long-term customer may be resolvable internally. But early legal input is worth prioritizing in several situations: the amount at stake is significant, the contract is complex or layered, the breach implicates IP or confidentiality, the other side is already represented, or contract notice and cure provisions are about to be triggered. In those situations, the cost of a short consultation before responding is almost always less than the cost of a response that narrows your options or creates problems to unwind later.

Getting the First Steps Right

Breach of contract disputes are not won on the merits alone. They are shaped by what each side did in the first days after the breach surfaced: what was preserved, what was communicated, whether notice provisions were followed, whether rights were reserved. Businesses that handle the first steps deliberately, even when the breach feels obvious, consistently end up in better positions than those that respond reactively.

Oxbridge Legal Services PLLC helps Michigan businesses evaluate breach of contract claims, navigate the first days of a dispute, and pursue the remedies that actually serve their business interests. If you believe a counterparty has breached an agreement and want to think through your options before responding, click here to schedule a consultation.