10 Scenarios Where You Need an NDA
An NDA isn't always necessary — but in these 10 situations, sharing information without one is a gamble you shouldn't take.
1. Hiring Employees
Every employee with access to proprietary information should sign an NDA — ideally on day one, as part of the onboarding paperwork. This covers trade secrets, customer lists, financial data, product roadmaps, source code, and internal processes. Most companies use a unilateral NDA for this, with the employee as the Receiving Party.
2. Engaging Freelancers and Contractors
Freelancers and contractors are a higher risk than employees — they work with multiple clients and have no long-term loyalty to your company. Always get a signed NDA before sharing briefs, brand guidelines, customer data, or unreleased product details. Make sure the NDA survives the end of the engagement.
3. Pitching to Investors
This one is tricky. Most venture capital firms refuse to sign NDAs before seeing a pitch — they review hundreds of deals and can't risk being accused of stealing an idea they already heard from someone else. The standard approach: share enough to generate interest (the problem, the market, your traction) without revealing your secret sauce (proprietary algorithms, unpatented technology, detailed financial models). Once an investor shows serious interest and you enter due diligence, an NDA becomes standard.
💡 Tip: For investor pitches: pitch deck = no NDA needed. Data room with financials and IP details = NDA required.
4. Selling a Business (M&A)
M&A transactions involve sharing the most sensitive information a company has: full financials, customer contracts, employee data, IP portfolios, and litigation history. A mutual NDA is non-negotiable before opening the data room. These NDAs are typically more comprehensive than standard ones, with specific provisions for the competitive sensitivity of M&A information.
5. Exploring Business Partnerships
Before signing a partnership agreement, both sides need to share business plans, customer demographics, pricing models, and go-to-market strategies to evaluate whether the partnership makes sense. A mutual NDA ensures both parties can speak freely without fear of the other side walking away with their playbook.
6. Product Development with External Teams
Working with an external design agency, development shop, or manufacturing partner? They'll need access to your specs, prototypes, source code, or proprietary processes. Get an NDA in place before the first kickoff meeting. If the external team will also contribute IP (designs, code, improvements), make sure the NDA addresses IP ownership — confidentiality alone doesn't determine who owns what's created.
7. Licensing Technology or IP
Licensing negotiations require the licensor to disclose detailed technical specifications, patent filings, and commercialization data. The licensee needs to evaluate whether the IP is worth the royalty. Both sides need protection — the licensor for their IP, the licensee for their business plans that the IP will be used in. A mutual NDA is standard.
8. Clinical Trials and Medical Research
In pharma and medtech, NDAs protect proprietary drug formulations, clinical trial protocols, patient data, and regulatory submission strategies. These NDAs often have extended terms (10+ years) because drug development timelines are long and the value of the data persists well beyond a typical 2-5 year NDA term.
9. Consulting Engagements
Management consultants, strategy advisors, and IT consultants get a deep look into a company's operations, finances, and strategic plans. Beyond the NDA, consulting agreements often include non-solicitation clauses (preventing the consultant from poaching your employees) and data security requirements. Make sure the NDA covers not just documents but also oral discussions and observations made during site visits.
10. Employee Exit Interviews and Severance
When an employee leaves — especially a senior one — remind them of their continuing NDA obligations in writing. A severance agreement often reaffirms the NDA and extends confidentiality for a specified period. This is not the time to discover the original NDA had no survival clause. Make sure every employee NDA explicitly states that confidentiality obligations continue after employment ends.
When You Don't Need an NDA
An NDA isn't always the answer. Skip it when:
- You're sharing publicly available information — if it's already on your website or in a press release, an NDA adds nothing.
- You're having a preliminary conversation with no specifics — a 30-minute coffee chat about 'exploring synergies' doesn't need legal paperwork.
- You're pitching to a VC who has a policy against signing NDAs — pushing too hard makes you look inexperienced. Share the non-confidential version.
- The information has no commercial value — if disclosure wouldn't cause any real harm, the friction of an NDA isn't worth it.
- You already have a contract in place — many master service agreements, employment contracts, and partnership agreements already include confidentiality provisions. Don't layer a redundant NDA on top.
What to Do Before Sharing Confidential Information
Once you've decided an NDA is needed, take these steps before sending any information:
- Get the NDA signed first — never share first and hope for a signature later. Once information is disclosed without protection, it can't be un-disclosed.
- Check the [NDA type](/blog/types-of-nda) — unilateral or mutual? Make sure it matches the situation. If both parties are sharing, you need mutual.
- Mark everything 'Confidential' — written documents, slide decks, email subjects. Oral disclosures should be confirmed in writing within a reasonable time.
- Review the [red flags](/blog/nda-red-flags-to-watch-for) — overly broad definitions, perpetual terms, hidden non-competes. Run the NDA through [ContractRev's AI checker](/nda-checker) for an automated scan before signing.
- Keep a log — record what information you disclosed, to whom, and when. If there's ever a dispute, you'll need to prove what was shared and that it was covered by the NDA.
- Limit access — share only what the other party genuinely needs. The broader the disclosure, the harder it is to prove a breach later.
💡 Tip: An NDA is only as strong as your ability to prove a breach. If you can't show what was disclosed and when, the NDA is worth very little in court. Documentation is your best enforcement tool.