What is a Non-Disclosure Agreement (NDA)
A non-disclosure agreement (NDA) is a legally binding contract in which one or more parties agree to keep specified confidential information secret and not disclose it to unauthorized third parties.
A non-disclosure agreement (NDA) — also called a confidentiality agreement — is a legally binding contract in which one or more parties agree to keep designated information confidential and refrain from sharing it with unauthorized third parties. NDAs are used in business, employment, and legal contexts to protect trade secrets, sensitive business information, proprietary technology, and other confidential material.
Violating an NDA exposes the breaching party to potential legal liability, including injunctive relief (a court order to stop the disclosure) and monetary damages.
Types of NDAs
Unilateral NDA — The most common type. One party (the disclosing party) shares confidential information with another party (the receiving party), who agrees not to disclose it. Common in employment and business negotiations.
Mutual (Bilateral) NDA — Both parties share confidential information with each other and both agree to keep the other's information secret. Common in joint ventures, mergers, or partnerships.
Multilateral NDA — Three or more parties, at least one of which discloses information to the others.
Key Elements of an NDA
A valid, enforceable NDA typically includes:
- Definition of confidential information — What is and isn't covered; specific vs. broad categories
- Obligations of the receiving party — How the information must be handled and protected
- Exclusions — What's NOT confidential (e.g., information already in the public domain, independently developed information)
- Term/duration — How long the obligation lasts (often 2–5 years; sometimes indefinite for trade secrets)
- Consequences of breach — Remedies available if the agreement is violated
Common Uses of NDAs
| Context | Purpose |
|---|---|
| Employment | Protecting trade secrets, client lists, proprietary processes |
| Business negotiations | Sharing financial or strategic information before a deal |
| Merger & acquisition | Due diligence access to sensitive company data |
| Inventor/contractor | Protecting IP before patent filing |
| Settlement agreements | Keeping terms of a legal settlement private |
| Entertainment/media | Protecting unreleased content or talent agreements |
Enforceability Limitations
NDAs are not unlimited. Courts typically won't enforce NDAs that:
- Are overly broad (attempting to cover public information)
- Restrict someone from reporting illegal activity (NDAs cannot prevent whistleblowing in most jurisdictions)
- Violate employee rights statutes (several states have limited NDAs in workplace harassment settlements)
- Have no legitimate business interest to protect
NDA vs. Non-Compete Agreement
An NDA prevents disclosure of information; it does not restrict where someone can work afterward. A non-compete agreement restricts an employee from working for competitors. These are separate agreements, often signed together, but they are legally distinct.
What Happens If You Sign One
Before signing an NDA, read it carefully:
- Understand exactly what information is covered
- Note the duration — especially if it's indefinite
- Look for mutual vs. one-sided obligations
- Consult an attorney if the NDA is broad, long-term, or tied to a business context with significant financial stakes
In employment contexts, NDAs are often presented as routine paperwork, but their scope can vary widely. Employees have the right to understand what they're agreeing to before signing.