When one side breaks a contract, the other side is usually entitled to money to make up for the loss. But there is a catch. The law does not let the innocent party simply sit back and let the losses pile up. You have a legal duty to keep your losses as small as reasonably possible. This is called mitigation of damages. If you do not make a reasonable effort to reduce the harm caused by the breach, the court will reduce the amount of money you recover. The idea is simple: you cannot ask the breaching party to pay for losses you could have avoided with sensible steps.
Let us be clear about what mitigation is not. It does not require you to take extraordinary risks, spend huge sums of money, or accept a completely different deal just to spare the other side. The standard is reasonableness. You have to act the way a prudent business owner would in the same situation. For example, if a supplier fails to deliver raw materials you need for production, you must try to buy substitute materials from another source. If a customer cancels a large order of custom-made goods, you cannot just let the goods sit in your warehouse. You should try to sell them to someone else, even at a discount. If you are an employee fired without justification, you must look for comparable work. You are not allowed to turn down a similar job and then claim lost wages from your former employer.
The tricky part is figuring out what counts as reasonable effort. Courts look at the facts of each case. They consider the time available, the costs involved, and the likelihood of success. If finding a replacement supplier would take months and cost more than the contract itself, you are not expected to do it. If you have a unique product no one else buys, you do not have to dump it at a fire-sale price. But you do have to show that you took the situation seriously and did what could reasonably be done. Keep records of every attempt you make. Send emails, make phone calls, request quotes, and document the responses. If you end up in court, these records are your proof that you fulfilled your duty to mitigate.
A common mistake is confusing mitigation with the concept of consequential damages. Mitigation is about your own behavior after the breach. Consequential damages are the extra losses that flow from the breach, like lost profits on a resale contract. The law requires that you mitigate those losses too. Suppose you planned to resell the goods you never received. After the breach, you cannot simply tell your own customer that you cannot deliver and sue the original supplier for the full lost profit. Instead, you must try to find substitute goods for your own customer. If you can find them at a higher price, you can recover the difference between the original price and the replacement price. If you cannot find them, you still have to prove that you made a genuine effort.
The burden of proof sits with the party who broke the contract. If the breaching party believes you failed to mitigate, they have to show what reasonable steps you should have taken and what the loss would have been if you had taken them. This is not always easy. The court will not require you to be perfect. You are allowed to make a reasonable business decision even if it later turns out that a different choice would have worked better. For instance, turning down a replacement contract because the new customer has a shaky credit history is usually considered reasonable, even if they would have paid eventually. Selling a product to a lowball buyer immediately may be acceptable, while waiting for a better offer for months might not be.
There are also limits to mitigation. You do not have to take action that would injure your own business reputation or that would require you to deal with the very person who breached the contract. You are not required to accept a substitute offer that is so different in nature from the original deal that it is not a true replacement. And you never have to spend money upfront unless the expenses are reasonable and will clearly reduce the total loss. These costs can themselves be included in your damage claim. If you pay a rush fee to get goods from another supplier, that fee is part of your recoverable damages. If you hire a temporary worker to fill a gap, that cost is recoverable as well.
In practice, the duty to mitigate often forces small businesses to be proactive in ways they would not otherwise be. The moment a breach happens, you should assess your options immediately. Delay can be treated as a failure to mitigate. If you wait two months before looking for a substitute, the court might assume you could have found one in one week. You also need to keep your mitigation costs reasonable. Spending $10,000 to save a $5,000 loss is not going to get you far. Courts expect a rough sense of proportion.
Understanding mitigation is critical for anyone drafting or enforcing contracts. It is not about being forgiving to the other side. It is about protecting your own right to full compensation. If you take smart, documented steps to limit your damages, you strengthen your claim and avoid giving the breaching party an easy defense. If you ignore the duty entirely, you may win the lawsuit but walk away with far less than you expected. In short, the law rewards the party who acts reasonably to minimize the damage, and punishes the party who lets a bad situation get worse.
