Every contract in the United States carries an unwritten rule: neither side may do anything that destroys the other side’s right to receive what the deal promised. That rule is called the implied covenant of good faith and fair dealing, and it applies whether or not the contract mentions it. Breaking it gives the injured party grounds to sue for the money they lost, and the doctrine reaches across insurance, employment, real estate, and commercial sales.
What the Duty Actually Requires
The Restatement (Second) of Contracts § 205 states the baseline: every contract imposes on each party a duty of good faith and fair dealing in both performance and enforcement.1Open Casebook. Restatement (Second) of Contracts 205 – Duty of Good Faith and Fair Dealing Each side has to carry out the agreement in a way that preserves the other side’s right to get what they bargained for. A landlord who technically complies with a lease but makes the property unusable, or a business partner who withholds cooperation to force a renegotiation, is violating this duty even if no specific clause forbids the conduct.
For sales of goods, the Uniform Commercial Code imposes the same obligation. UCC § 1-304 requires good faith in the performance and enforcement of every contract or duty governed by the Code.2Legal Information Institute. UCC 1-304 – Obligation of Good Faith The UCC defines good faith as honesty in fact plus the observance of reasonable commercial standards of fair dealing. That second prong matters. In a commercial setting, you’re measured not just by whether you lied, but by whether a reasonable businessperson in your industry would consider your behavior fair.
Lawyers describe what the covenant protects as the “fruits of the contract.” It stops one side from collecting all the benefits of the agreement while quietly undermining the other side’s ability to do the same. Courts enforce this silent term because without it, every contract would need to anticipate every possible form of manipulation, which is impossible.
Where the Covenant Applies, and Where It Does Not
The duty kicks in once a contract is formed. It governs how the parties perform, how they enforce the agreement, and how they handle termination or disputes along the way. It does not reach the negotiation phase before a contract exists. Aggressive bargaining, bluffing about alternatives, or walking away at the last minute is handled under other doctrines like misrepresentation or promissory estoppel, not this one.
The most important limit catches many plaintiffs by surprise: the covenant cannot override what the contract actually says. If a lease lets the landlord terminate with 30 days’ notice for any reason, the tenant generally cannot claim bad faith when the landlord uses that right, even if the timing feels unfair. The covenant fills gaps. It does not rewrite the terms the parties agreed to.
At-Will Employment
Employment is where this gets complicated. A minority of states, including California, Alaska, Arizona, and Montana, recognize the implied covenant as a limit on at-will employment, meaning an employer cannot fire someone in bad faith even without a formal employment contract. The vast majority of states do not apply the covenant to override the default at-will rule, so an employer in those states can terminate for almost any reason that isn’t independently illegal, such as discrimination.
Discretion Granted by the Contract
The covenant does its hardest work when one party holds discretionary power over the other’s rights. If the agreement lets one side set prices, approve work, decide quality standards, or determine whether conditions have been met, that discretion must be exercised honestly and for purposes both parties reasonably contemplated. The holder cannot weaponize the power to extract concessions or punish the other side for unrelated grievances.
A party exercising discretion the contract expressly grants is not acting in bad faith simply because the outcome disappoints the other side. The covenant demands honest use within the deal’s original purpose. It does not demand outcomes everyone likes.
Conduct Courts Have Called Bad Faith
The commentary to Restatement § 205 acknowledges that no complete list is possible, but identifies categories courts return to repeatedly.3Open Casebook. Restatement (Second) of Contracts 205 – Comments a and d Bad faith can be active or passive, and fair dealing sometimes demands more than refraining from lies.
- Evading the spirit of the bargain by looking for technical loopholes to escape clear responsibilities. This is the most common form and the hardest to pin down, because it often looks like compliance on paper.
- Slacking off: deliberately reducing effort, dragging out timelines, or neglecting obligations in ways that force the other side to spend more or accept worse results. A contractor who slows to a crawl after collecting an upfront payment is the classic example.
- Knowingly delivering substandard performance, hoping the other party won’t notice or won’t want to fight about it. This requires a conscious decision to cut corners, not an honest mistake.
- Interfering with the other party’s performance by withholding site access, refusing necessary approvals, or failing to supply agreed-upon materials.
- Abusing a contractual power to specify terms, such as using authority over specifications or schedules to impose unreasonable conditions the other side never would have accepted up front.
The commentary also stresses that bad faith can be inaction. Sitting on approvals, ignoring communications, or refusing to cooperate can violate the covenant as clearly as active sabotage.
What You Have to Prove
A claim for breach of the implied covenant typically requires four things. First, a valid and enforceable contract existed between the parties. Second, the plaintiff fulfilled their own obligations, or had a legitimate reason for not doing so. Third, the defendant engaged in conduct that deprived the plaintiff of the benefits they were entitled to receive. Fourth, the plaintiff suffered actual financial harm as a result.
The third element decides most cases. It is not enough to show that the project failed or the outcome disappointed. The plaintiff must identify specific actions or omissions by the defendant that obstructed the deal’s purpose. Vague complaints about the other side being difficult rarely survive a motion to dismiss.
Many courts also require some evidence of intent or motive. The standard varies by jurisdiction, but mere mistake or ordinary negligence is usually not enough. The plaintiff needs to show the defendant acted with a dishonest purpose or with conscious disregard for the other party’s contractual rights. Internal emails, communications showing awareness of the harm, and patterns of similar conduct against other parties all help carry that burden.
Notice Before Filing Suit
Before heading to court, check whether the contract contains a notice-and-cure provision. Many commercial agreements require written notice of the alleged breach and a specified period, commonly 30 to 60 days, to fix the problem before suit can proceed. Skipping this step can get your case dismissed on procedural grounds before the merits are ever reached.
The UCC imposes its own notice rule for sales of goods. Under UCC § 2-607(3)(a), a buyer who has accepted goods must notify the seller of any breach within a reasonable time after discovering it, or lose all remedies. Courts read “reasonable time” strictly, and some have found delays of just a few months fatal. The notice should identify the specific transaction, describe the defect in enough detail that the seller can investigate, and make clear that the buyer treats the issue as a breach rather than a minor complaint.
Notice rules exist for practical reasons. They give the breaching party a chance to fix the problem, preserve evidence while it’s fresh, and create an opening for settlement before litigation costs climb. Missing them is one of the most avoidable ways to forfeit an otherwise strong claim.
What You Can Recover
The standard remedy is expectation damages, which aim to put the injured party in the financial position they would have occupied if the breach had never happened. That generally means the value of the benefits promised under the contract, minus any costs saved by not having to perform further. Awards range from modest to substantial depending on the size of the deal.
Punitive damages are generally not available for breach of contract, even when the breach involves bad faith. The Restatement (Second) of Contracts § 355 limits them to situations where the conduct also constitutes an independent tort.3Open Casebook. Restatement (Second) of Contracts 205 – Comments a and d In most commercial disputes, you recover what you lost. You do not get to punish the other side.
You also cannot let losses pile up. Restatement (Second) of Contracts § 350 bars recovery for losses the injured party could have avoided without undue risk, burden, or humiliation.4Open Casebook. Restatement (Second) of Contracts 350 – Avoidability as a Limitation on Damages If a client stops cooperating, the contractor cannot keep billing for work that will never be used. They must stop, limit the damage, and sue for what they have already lost. Reasonable but unsuccessful mitigation efforts, however, won’t count against you. If you try to find a replacement supplier and the best option costs more, you can still recover the difference.
The Insurance Exception
Insurance disputes are the one area where bad faith routinely crosses from contract law into tort law, which unlocks remedies that are otherwise unavailable. When an insurer unreasonably denies a valid claim, delays payment without justification, or refuses to settle a third-party claim within policy limits, the policyholder may be able to pursue tort damages, including compensation for emotional distress and, in many states, punitive damages.5International Bar Association. US Tort System – Insurance Bad Faith and Extra-Contractual Damages
First-party bad faith is when your own insurer wrongfully denies, delays, or lowballs your claim. Third-party bad faith is when your insurer, defending you against someone else’s lawsuit, fails to settle within policy limits and exposes you to personal liability for the excess judgment. Several states require a formal notice to the insurer or a regulatory body before suit, and missing that step can derail the case. Attorney fees are sometimes available to the prevailing party, though the rules vary by jurisdiction and claim type.
How Long You Have to Sue
Claims for breach of the implied covenant generally run on the same statute of limitations as breach of contract claims, because the covenant is treated as part of the contract itself. Deadlines for written contracts range from three years in some states to ten years or more in others, with most falling between four and six. Oral contracts usually have shorter periods. Where the claim sounds in tort rather than contract, as with insurance bad faith in some states, a different and often shorter period may apply.
The clock typically starts when the breach happens or when the injured party knew or should have known about it, depending on the jurisdiction. The deadline is not negotiable, so get advice well before it runs.
Defenses You Should Expect
Defendants in these cases tend to rely on a short list of established defenses. Knowing them helps both sides judge the strength of a claim.
- The contract expressly authorized the conduct. If the agreement grants the right to take the specific action being challenged, the covenant generally cannot override that express grant. A termination clause or a discretionary pricing provision used according to its terms is usually bulletproof against a bad faith claim based on the same conduct.
- The parties anticipated the situation. The covenant fills gaps. If the disputed scenario was discussed in negotiations and left unaddressed in the final agreement, a court is unlikely to insert the restriction the parties chose to leave out.
- The conduct aligned with the deal’s original purpose. The covenant enforces the bargain as understood at formation, not as one side wishes it had been structured in hindsight.
- The plaintiff failed to perform first. A plaintiff who hasn’t held up their end faces an uphill battle claiming the other side acted in bad faith. Courts expect clean hands, or at least a valid excuse.
One jurisdictional note worth checking before filing: not every state recognizes an independent cause of action for breach of the implied covenant. In some, the claim must be pleaded as part of a broader breach of contract action rather than on its own. That distinction can affect what damages are available and how the case is framed.