How Non-Disclosure Agreements Work and When They Can Be Legally Broken

A non-disclosure agreement is a contract that restricts what one party may reveal about confidential information.

It can be legally broken, or more precisely found unenforceable, when it conceals crime, blocks reports to regulators, silences workplace harassment claims, lacks valid consideration, is drafted too broadly, or collides with a subpoena, court order, or statute.

Most people sign an NDA without a second reading. Job offers, vendor onboarding, investor meetings and freelance briefs routinely carry one.

The assumption that the document is airtight is the most common and most expensive misunderstanding in the field. Courts treat NDAs as ordinary contracts, which means they are bound by public policy limits that no signature can erase.

What an NDA Actually Does

An NDA creates a duty of confidentiality that would not otherwise exist. Trade secret law protects some information by default, but only when the owner takes reasonable steps to keep it secret. An NDA is the most visible evidence of those steps. In disputes, its existence often matters as much as its wording.

The agreement comes in two forms. A unilateral NDA binds one party, typically an employee, contractor, or recipient of a pitch. A mutual NDA binds both sides and is common in merger talks, joint ventures, and licensing negotiations.

Practitioners also distinguish between pre-dispute agreements signed at hiring or onboarding and post-dispute agreements signed as part of a settlement. That distinction now drives much of the law on enforceability.

A well-built NDA does four things: it defines the confidential information, names the permitted uses, sets a duration, and lists exclusions. The standard exclusions cover information already public, information the recipient knew beforehand, information independently developed, and information received lawfully from a third party. Drafts that omit these exclusions invite challenge.

The Clauses That Cause Trouble

Overbreadth is the most frequent defect. An agreement that defines confidential information as “all information of any kind learned during the relationship” sweeps in public facts, general skills and the employee’s own working conditions. Courts regularly decline to enforce provisions that reach this far, and some trim them rather than discard them, depending on the jurisdiction.

Duration is the second weak point. Trade secrets can be protected indefinitely as long as they remain secret, but a perpetual restriction on all other information is far harder to defend. Terms of two to five years for ordinary business information are common and tend to survive scrutiny.

Remedies clauses also draw attention. Liquidated damages set so high that they function as penalties are unenforceable in many courts. Injunctions are the more realistic threat, because a judge can order silence quickly while the underlying dispute is still being argued.

When an NDA Can Be Legally Broken

The phrase “legally broken” needs care. In most cases the speaker is not violating a valid contract and escaping punishment. Instead, the clause is void or unenforceable as applied, or a higher legal authority overrides it. Five categories account for nearly every real-world exception.

Evidence of Crime or Fraud

No court will enforce a promise to hide a crime. An NDA cannot stop a person from reporting suspected criminal conduct to law enforcement, and agreements that attempt this are generally void as against public policy. The same principle covers fraud on investors, regulators or the public.

Whistleblowing and Regulatory Reports

Federal securities rules prohibit actions that impede people from communicating with the Securities and Exchange Commission about possible violations. Enforcement under Rule 21F-17 has produced settlements with companies whose confidentiality language required employees to seek permission or notify the company before speaking to regulators.

The Defend Trade Secrets Act adds a narrower protection: individuals receive immunity for disclosing trade secrets in confidence to government officials or attorneys solely to report a suspected violation of law. Employers that omit the required notice in contracts can lose the ability to recover exemplary damages and attorney fees from employees.

Sexual Harassment and Assault

This is the area that moved fastest after the #MeToo movement. The federal Speak Out Act, signed on December 7, 2022, makes pre-dispute non-disclosure and non-disparagement clauses unenforceable when they bar disclosure of sexual harassment or sexual assault disputes.

The limit is important: the Act targets agreements signed before a dispute arises. Settlement agreements signed after a claim exists are not covered by the federal law, though many states restrict them separately.

California, New York and a growing number of other states have enacted their own limits, and the scope varies widely. California’s Silenced No More Act extended restrictions to harassment and discrimination beyond sex-based claims. Legislators in several states have followed that model, so the correct answer to “is this NDA enforceable?” often depends on the state and the date of signing.

Labor Rights

The National Labor Relations Board held in McLaren Macomb in February 2023 that offering severance agreements with broad confidentiality and non-disparagement terms to non-supervisory employees violates the National Labor Relations Act. The reasoning is that such clauses chill employees’ right to discuss workplace conditions.

Enforcement priorities at the Board shift with administrations, and the guidance that accompanied the decision has been revisited since, so employers and employees alike should check current Board positions rather than assume a single answer. Even so, the underlying statutory right to discuss wages and conditions has not disappeared, and broad gag provisions aimed at rank-and-file workers remain legally exposed.

Compelled Disclosure

A subpoena, court order, or lawful request from a regulator overrides a private promise of silence. Well-drafted NDAs anticipate this by permitting disclosure when legally required, usually with a duty to give the other party advance notice where the law allows.

A recipient who ignores a subpoena in order to honor an NDA faces contempt of court, which carries far worse consequences than a contract claim.

Real-World Cases That Shaped the Debate

The abuse of confidentiality agreements became a public issue through the Harvey Weinstein scandal. Settlements and employment agreements had kept allegations private for decades.

In 2017, Zelda Perkins, a former assistant at his company, chose to break the NDA she had signed in 1998, and she later told a UK parliamentary committee about the agreement’s terms. Her decision to risk legal consequences pushed the question of NDA limits into legislatures on both sides of the Atlantic.

Advocacy by former technology workers, including Ifeoma Ozoma, helped drive California’s expansion of protections for employees who speak about unlawful workplace conduct. Such campaigns demonstrated a practical point: legislative change tends to follow public cases where a signed promise protected misconduct rather than legitimate business secrets.

In the United Kingdom, lawmakers have also moved against agreements that stop victims of crime from speaking to police, lawyers or support services. The details differ from US law, which illustrates how little uniformity exists across borders.

Common Mistakes by Both Sides

Employees often assume that signing means total silence, and so abandon legitimate reports. The opposite mistake is also costly: assuming that any NDA is unenforceable and speaking freely about genuine trade secrets. Courts have awarded substantial damages and injunctions against individuals who disclosed truly confidential commercial information, even where the surrounding contract had flaws.

Employers make their own errors. Copying a template from another industry or state is the most frequent. A single clause that overreaches can taint a document, and some courts decline to rewrite defective language. Failing to carve out protected disclosures, such as those to regulators, has produced regulatory settlements for companies with otherwise sound legal programs.

Another overlooked point involves proof. An NDA breach claim requires showing that the information was actually confidential. Businesses that never marked documents, restricted access or tracked who received material often struggle to prove it, regardless of how strong the contract language looks.

A Practical Checklist Before Signing or Relying on an NDA

• Confirm that the definition of confidential information is specific and excludes public or previously known material.
• Look for an express carve-out permitting reports to government agencies and disclosures required by law.
• Check the duration, and question any perpetual obligation that extends beyond trade secrets.
• Identify which jurisdiction’s law governs, because enforceability on harassment, discrimination and labor topics varies by state and country.
• Determine whether the agreement was signed before or after a dispute arose, since that timing can decide whether federal and state limits apply.
• Review the remedies clause for penalty-style damages that a court may refuse to enforce.
• Obtain advice from a licensed attorney in the relevant jurisdiction before breaching or threatening to enforce any agreement.

The Bottom Line

NDAs remain valuable and, in most commercial settings, fully enforceable. They protect product roadmaps, client lists, source code, and negotiating positions. The law draws its line at purpose: confidentiality that shields legitimate business information is upheld, while confidentiality that hides wrongdoing, blocks regulators or muzzles lawful complaints is increasingly treated as void.

Anyone weighing a disclosure should treat the decision as a legal question with a jurisdiction-specific answer, and this article provides general information rather than legal advice.

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