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How do I write a non-assignment clause in a contract?

I want to stop my vendor from handing off my project to someone else without my approval.

Answer

You can write a non-assignment clause by clearly stating that the vendor cannot transfer the contract or delegate the work without your prior written consent. This gives you control over who performs the services.

A well-written clause also explains what happens if the vendor tries to assign or delegate without approval.

What should a non-assignment clause include?

A strong clause should clearly restrict both assignment (transferring the contract) and delegation (handing off the work).

It should state that neither rights nor duties can be transferred without your written consent. It can also include language that any unauthorized transfer is void or considered a breach.

This helps ensure the vendor cannot pass the work to someone else without your knowledge.

How does this protect your business?

This type of clause protects your ability to choose who you work with. It ensures the vendor you selected remains responsible for the project unless you approve a change.

It also reduces the risk of lower-quality work or unexpected third parties getting involved without your review.

What to do next...

  1. Decide if you want to block all assignments or allow them with consent.
  2. Include clear "no assignment without written consent" language.
  3. Add terms explaining what happens if the clause is violated.
  4. Review the clause with your full contract to ensure consistency.

What to consider in your specific situation

While non-assignment clauses are common, your situation may depend on several factors.

  • The type of services and how important the vendor's identity is.
  • Whether you want flexibility to allow approved transfers.
  • The wording used to define assignment and delegation.
  • The risk of subcontracting affecting quality or timelines.
  • Local laws that may affect enforceability.
  • The importance of control over who performs the work.

Since every situation is different, consider more information through Rocket Copilot, a Legal Pro, or a legal document review to move forward with confidence.

Pro Reviewed
Published on 04/19/2026
Reviewed by Rustin B. Duncan, Esq.

At Rocket Lawyer, we follow a rigorous editorial policy to ensure every article is helpful, clear, and as accurate and up-to-date as possible. This page was created, edited and reviewed by trained editorial staff who specialize in translating complex legal topics into plain language, then reviewed by experienced attorneys to ensure legal accuracy.

Please note: This page offers general legal information, but not legal advice tailored for your specific legal situation. Rocket Lawyer Incorporated isn't a law firm or a substitute for one. For further information on this topic, you can Ask an Attorney.

Laura Bojart
Laura Bojart
Editorial Researcher and Copywriter

Laura Bojart is an SEO copywriter and editor at Rocket Lawyer. She researches legal and business topics and translates complex ideas into clear, practical content for everyday readers. With her background in journalism and endless curiosity, she approaches each subject by asking the questions readers are likely to have first, making legal information approachable and easy to understand even to those with no legal background.