Covenant Not to Sue
Published: November 6, 2026 · Last reviewed: November 6, 2026 · Est. reading time 11 minutes
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In plain language: A covenant not to sue is a written promise by someone who was harmed not to sue the person or business that caused the harm, usually in exchange for money. Unlike a full release, the claim itself still exists. The harmed person may still pursue other parties who share the blame.
Technical definition: A covenant not to sue is a contractual promise by an injured party not to bring suit against the party that caused the injury. Unlike a release of liability, it does not extinguish the cause of action. The claim can still be assigned, nonsettling joint tortfeasors may remain liable, and the insurer's subrogation rights may be preserved.
Covenant Not to Sue at a Glance
The table below summarizes how a covenant not to sue fits into liability claim settlements and insurance recovery.
| Attribute | Detail |
|---|---|
| Also known as | Agreement not to sue, promise not to sue |
| Category | Claim settlement agreement |
| Lines of business | General liability, auto, property, environmental, employment practices |
| Industries most affected | Construction, transportation, manufacturing, real estate |
| Related forms or endorsements | No standard ISO form; drafted by counsel for each settlement |
| Who bears the risk | Claimant, settling defendant, nonsettling defendants, subrogating insurer |
| Common solution | Settlement document reviewed by defense counsel and the carrier before signing |
| Also interacts with | Subrogation, contribution among tortfeasors, setoff, underinsured motorist consent clauses |
Key Takeaways
- A covenant not to sue is a promise by a harmed person not to sue one particular party, while the underlying legal claim stays alive instead of being wiped out.
- Settlement wording matters in agency work because the choice between a covenant and a release can decide whether a client keeps rights against other defendants and whether the client's insurer keeps its subrogation rights.
- The most common misunderstanding about a covenant not to sue is treating it as the same thing as a release, when a release can end the claim against everyone and damage the carrier's recovery.
- Agencies can reduce E&O exposure on any settlement paper by telling clients to send it to their carrier before signing.
What Is a Covenant Not to Sue in Insurance?
A covenant not to sue is a legal agreement in which a person with a claim promises not to sue a specific party over that claim. As a legal term, the covenant is narrower than a release. IRMI explains that a release is a waiver of a known right and destroys the claim. A covenant leaves the claim in place and imposes contractual restrictions on the claimant's right to sue.
The distinction grew out of an old rule about joint tortfeasors. Courts once treated a release of one wrongdoer as a release of every wrongdoer liable for the same injury, since a single claim could be satisfied only once. Lawyers used the covenant to settle with one defendant while keeping the claim against the others. Many states now address the issue by statute. North Carolina's G.S. 1B-4, for example, says a release or covenant given in good faith to one of several tortfeasors does not discharge the others unless its terms say so. Contract law applies a similar idea to joint obligors who owe the same debt.
Insurance adds a second reason the difference matters. Under the law of some states, according to IRMI, a policyholder who releases the wrongdoer may be held to have prejudiced the insurer's subrogation rights. A policyholder who signs only a covenant may be held to have preserved those rights, because the claim still exists and can be assigned to the insurer.
Consider a pedestrian hit by a delivery van whose brakes failed after a repair. The pedestrian settles with the van owner's auto carrier for $250,000 and promises not to sue the van owner. The claim against the repair shop survives, so the pedestrian can still pursue the shop. Under a statute like North Carolina's, any later award against the repair shop is reduced by the $250,000 already paid.
How Does Covenant Not to Sue Work?
- The injury. A person suffers bodily injury or property damage, and one or more parties may be legally responsible.
- The negotiation. One defendant, often through its liability insurer, offers money to avoid further litigation costs in exchange for the claimant's promise to drop that defendant from the legal dispute.
- The signing. Both sides sign a document that names the released parties and the released claims, and leaves the claim against everyone else intact.
- The credit. Claims against the nonsettling parties continue. Depending on state law, the court reduces any later award by the settlement amount, and the settling obligor may be shielded from contribution claims.
- The enforcement. A claimant who sues anyway breaks a contractual obligation, faces the covenant as a defense in that court proceeding, and may face a breach of contract claim from the settling party.
Claim Examples Involving Covenant Not to Sue
Scaffolding injury with a general contractor and two subcontractors
A worker falls from scaffolding on a commercial project and sues the general contractor, the scaffold subcontractor, and the masonry subcontractor. Early in the case, the scaffold subcontractor's CGL carrier settles and obtains a covenant not to sue. The worker keeps the case alive against the general contractor and the masonry firm. Defense counsel for the settling carrier also checks how the agreement treats contribution and indemnification claims from the other defendants.
Warehouse fire caused by an electrician
An electrician's wiring error starts a fire at a client's warehouse. The client's property insurer pays the building claim and plans to subrogate against the electrician. Before the carrier finishes, the client signs a broad release with the electrician in exchange for a small payment toward uninsured consequential damages. Under the law of some states, that release could prejudice the property carrier's subrogation rights. A covenant reviewed by the carrier first would have left the claim in place and assignable to the insurer.
Brownfield buyer settling with EPA.
A developer buys an old industrial lot near a former hazardous waste site and settles with EPA, the federal environmental regulator, over the cleanup. Under CERCLA section 122(f), the federal government may give a settling party a covenant not to sue for liability to the United States. Coverage for future liability takes effect only after remedial action is certified complete, and it generally carries an exception for conditions unknown at that time. The developer's environmental liability policy still matters, because the federal covenant does not stop private parties from bringing their own claims.
Covenant Not to Sue vs. Release: What Is the Difference?
A covenant not to sue and a release both end a dispute between two parties, but they work differently. A release gives up and extinguishes the claim. The covenant keeps the claim in existence and only bars the claimant from suing the covered party. The table below compares the two side by side.
| Comparison area | Covenant Not to Sue | Release |
|---|---|---|
| Primary use case | Settling with one of several defendants, keeping claims against others | Ending a claim completely |
| Coverage/concept type | Contractual bar on suing; the claim survives | Waiver of the claim; the claim is destroyed |
| Typical exclusions | Nonsettling parties, unreleased claims, rights reserved in the document | Claims expressly carved out of the release language |
| Who is most affected by errors? | Nonsettling defendants and subrogating insurers | Policyholders whose carrier loses subrogation, claimants who lose claims against others |
| Common mistakes | Assuming the label controls when the wording reads like a release | Signing a broad release without asking the carrier first |
What Are the Most Common Mistakes With Covenant Not to Sue?
- Trusting the title instead of the text. Courts look at the parties' intent and the actual wording, so a document labeled as a covenant can still work as a release, with the opposite effect on other claims.
- Signing before the carrier sees it. A client who settles directly with a wrongdoer can impair the property insurer's subrogation rights, and the carrier may then dispute or reduce the claim payment.
- Ignoring consent-to-settle clauses. Many underinsured motorist provisions require the insurer's consent before the insured settles with the at-fault driver, because an unapproved settlement can put UM or UIM recovery at risk.
- Drafting too narrowly or too broadly. A covenant that covers only monetary damages may leave the claimant free to seek injunctive relief or other equitable relief, while an overly broad one may wipe out claims the client meant to keep.
- Nothing in writing in the file. An agency that learns of a pending settlement and does not alert the carrier in writing, or document its advice to the client, creates E&O exposure.
How to Explain Covenant Not to Sue to a Client
Explaining Covenant Not to Sue to a personal lines client
You can say: "The other driver's insurer may pay you in exchange for your promise never to sue their driver. Your claim against anyone else stays alive, which is different from a full release. Before you sign anything, send it to us and to your own carrier. Signing the wrong paper could hurt your underinsured motorist claim or your insurer's right to collect."
Explaining Covenant Not to Sue to a small business owner
You can say: "If another company damages your property, it may offer money if you agree to give up your right to sue that company. That paper usually keeps your claim against anyone else. Your insurer may also need to recover what it paid you. Let your carrier and your legal counsel review the document before you sign, so you do not give away rights by accident."
Explaining Covenant Not to Sue to a CFO or risk manager
You can say: "A covenant is a standard dispute resolution tool that lets us settle with one defendant while keeping our claims against the others intact. The key issues are the scope of the release of claims, setoff and contribution rules in the governing state, and the effect on our carriers' subrogation rights. Every settlement document should go to defense counsel and the carrier before anyone signs, so the agreement does not conflict with policy conditions."
Frequently Asked Questions About Covenant Not to Sue
What is the difference between a release and covenant not to sue?
A release ends the claim, while the covenant keeps the claim alive and bars suit only against the covered party. That difference can decide whether the claimant can still pursue other defendants. Some states treat the two the same by statute, so the governing state's law matters.
Is a general release and covenant not to sue the same document?
Many settlement documents combine a general release and covenant not to sue in one agreement. The general release gives up the listed claims, and the covenant adds a binding obligation not to sue on them. Read the exact wording, because a combined document usually works like a full release of the released parties.
What is a conditional covenant not to sue?
Such a covenant takes effect, or stays in force, only if stated conditions are met. Federal environmental settlements under CERCLA section 122(f) are one example: a covenant covering future liability does not take effect until cleanup is certified complete, and it remains subject to the settling party's performance.
Can a severance agreement stop an employee from filing a discrimination charge?
No severance deal can block an employee's right to file a charge with the Equal Employment Opportunity Commission (EEOC), the governmental agency that enforces federal civil rights laws in the workplace. Under 29 CFR 1625.23, an employee who challenges a waiver of claims or covenant under the Age Discrimination in Employment Act (ADEA) does not have to return the severance payment first. The rule also bars penalties for filing an ADEA suit, such as making the employee pay the employer's attorney fees, except where federal law allows them. Agreements tied to separation from employment, whether a severance letter or an employment agreement, often add a promise not to join a class action or collective action.
Can you sue other parties after you agree not to sue one of them?
In most cases, yes, because the covenant protects only the party named in it. The claim against other wrongdoers continues, though the settlement amount usually reduces any recovery. A document that reads like a full release may, in some states, end the claim against everyone.
Does a covenant not to sue protect my insurer's subrogation rights?
A covenant is more likely than a release to protect subrogation, because the claim still exists and can be assigned to the insurer. Results vary by state. Policyholders should still give their carrier written notice and get its approval before signing any settlement.
Sources and References
- International Risk Management Institute (IRMI). Covenant Not To Sue.
- North Carolina General Assembly. G.S. 1B-4. Release or covenant not to sue.
- Legal Information Institute, Cornell Law School. 29 CFR § 1625.23 - Waivers of rights and claims: Tender back of consideration.
- Legal Information Institute, Cornell Law School. 42 U.S. Code § 9622 - Settlements.