A nonassignable right is a legal entitlement or obligation that cannot be transferred from the person who holds it to anyone else. The lock comes from one of three places: a clause in the contract, a statute that bans the transfer outright, or a common law rule treating certain rights as too personal to hand off. Getting the category wrong can void a transaction entirely or expose the person attempting the transfer to a breach of contract claim.
Where the Restriction Comes From
Any time a right turns out to be nonassignable, the reason traces back to one of three sources.
The first is the contract itself. Parties can write an anti-assignment provision directly into their agreement, restricting or outright prohibiting either side from transferring rights or duties to a third party.
The second is a statute. Federal and state laws ban the transfer of specific rights regardless of what the contract says. These statutory prohibitions typically protect vulnerable people or public systems, and no private agreement can override them.
The third is common law. Courts have long held that certain rights are too personal to transfer. A contract built around a particular person’s skill, judgment, or trustworthiness falls into this category. If you hired a specific architect because of her design reputation, she cannot hand the project off to someone you never vetted.
Even outside personal-service situations, an assignment fails if it would materially change what the other party has to do, significantly increase the risk they bear, or seriously reduce their chances of getting what the contract promised. The Uniform Commercial Code captures this principle for the sale of goods, and most courts apply similar reasoning to other contracts.
Assigning a Right Is Not the Same as Delegating a Duty
People often collapse these two ideas, and the legal consequences are different. Assigning a right means transferring the benefit you are owed under a contract. Delegating a duty means handing off the work you are supposed to perform.
Routine duties can usually be delegated. If you hired a company to build a standard fence, that company can subcontract the labor. But the original party stays on the hook if the substitute does a bad job. Delegation does not erase liability.
Delegation becomes restricted when the contract depends on a specific person’s unique skills, or when the other side placed particular trust in the original party. A recording contract with a named musician, a consulting deal with a specific expert, or a commission from a particular artist all involve duties that cannot be handed off. The person who agreed to perform is the only one who can satisfy the obligation.
Rights That Are Nonassignable by Statute
Retirement Plan Benefits Under ERISA
Federal law requires every qualified pension plan to include a provision stating that benefits “may not be assigned or alienated.”1Office of the Law Revision Counsel. 29 U.S. Code 1056 – Form and Payment of Benefits This covers 401(k) plans, traditional pensions, and similar qualified plans. Participants cannot pledge their retirement savings to creditors, use them as collateral for most loans, or sign them over to anyone else.
The one significant exception is a Qualified Domestic Relations Order. During a divorce, a state court can issue a QDRO directing the plan to pay a portion of the participant’s benefits to a former spouse or dependent child.2U.S. Department of Labor. Advisory Opinion 1994-32A A regular divorce decree alone is not enough; the order has to meet specific federal requirements and the plan must approve it. Outside that narrow family-law context, the anti-alienation rule holds firm.
Social Security Payments
The right to any future Social Security payment “shall not be transferable or assignable, at law or in equity,” and the money itself is exempt from execution, levy, attachment, garnishment, and bankruptcy proceedings.3Office of the Law Revision Counsel. 42 U.S. Code 407 – Assignment No other federal law can override this protection unless it explicitly references the section by name. The only carve-out allows voluntary federal tax withholding from benefit payments.
Veterans Affairs Benefits
Payments due or to become due under any law administered by the VA “shall not be assignable except to the extent specifically authorized by law” and are exempt from creditor claims, attachment, levy, and seizure.4Office of the Law Revision Counsel. 38 U.S. Code 5301 – Nonassignability and Exempt Status of Benefits The VA treats arrangements that function like assignments the same way as formal ones. Any agreement where someone acquires the right to receive a veteran’s compensation or pension in exchange for something of value is void from inception.
Federal Government Contracts
A party that receives a federal contract or order cannot transfer the contract or any interest in it to another party. Any attempt to do so “annuls the contract or order so far as the Federal Government is concerned.”5Office of the Law Revision Counsel. 41 U.S. Code 6305 – Prohibition on Transfer of Contract and Certain Allowable Assignments A separate statute regulates the assignment of money claims against the United States, which is valid only after the claim has been allowed, the amount decided, and a payment warrant issued.6Office of the Law Revision Counsel. 31 U.S. Code 3727 – Assignments of Claims A narrow exception lets a contractor assign amounts due to a bank or financing institution under specific conditions.
Rights That Are Nonassignable by Common Law or Contract
Insurance Policies
Property and casualty insurance policies are generally nonassignable without the insurer’s written consent. The insurer priced the policy based on the specific risk profile of the original policyholder and the insured property, and allowing someone with a different claims history or property condition to step in would rewrite that risk without the insurer’s agreement. Most policies include a consent-to-assignment clause requiring the insurer to endorse any transfer. After a covered loss has already occurred, many jurisdictions do allow the policyholder to assign the claim proceeds to a contractor or other third party performing repairs, though several states have restricted these arrangements in recent years.
Personal Injury Claims
The common law has long treated the right to sue for a personal injury as belonging exclusively to the injured person. Most states still prohibit assigning personal injury tort claims to third parties. The reasoning is that these claims are uniquely tied to the victim, and allowing outsiders to buy and sell litigation rights invites exploitation and encourages speculative lawsuits. Property damage claims are treated differently, which is why insurers can routinely sue under subrogation after paying a property loss.
Intellectual Property Licenses
Nonexclusive patent and copyright licenses are personal to the licensee under federal law. A patent license is essentially a promise by the patent owner not to sue the licensee for infringement, and because the owner chose to extend that promise to a specific party, the licensee cannot transfer it without consent. Courts treat these agreements much like personal service contracts. The same principle applies to nonexclusive copyright licenses and to software licenses, which is why end-user license agreements almost always prohibit transferring the license to another person. Exclusive licenses sometimes allow greater transferability, but even those typically require the licensor’s approval.
When an Anti-Assignment Clause Does Not Actually Block the Transfer
A contract can contain a clear anti-assignment clause that is nonetheless unenforceable for certain transfers. The Uniform Commercial Code renders anti-assignment provisions ineffective when they restrict the assignment of accounts receivable, chattel paper, payment intangibles, or promissory notes as part of a secured financing transaction.7Legal Information Institute. UCC 9-406 – Discharge of Account Debtor; Notification of Assignment; Identification and Proof of Assignment; Restrictions on Assignment of Accounts, Chattel Paper, Payment Intangibles, and Promissory Notes Ineffective
In practice, a business can use its accounts receivable as collateral for a loan even if the underlying customer contracts prohibit assignment. The UCC treats access to commercial financing as more important than enforcing private restrictions on transferability. A clause that says “this contract may not be assigned” will not stop a lender from taking a security interest in the payment stream.
The override has limits. It does not apply to the sale of a payment intangible or promissory note, and it does not override restrictions involving consumer obligations incurred for personal or household purposes.7Legal Information Institute. UCC 9-406 – Discharge of Account Debtor; Notification of Assignment; Identification and Proof of Assignment; Restrictions on Assignment of Accounts, Chattel Paper, Payment Intangibles, and Promissory Notes Ineffective Health-care-insurance receivables are also excluded.
What Happens if Someone Tries to Assign Anyway
The consequence depends on whether the restriction is statutory or contractual, and people regularly get this wrong.
When a statute prohibits assignment, the transfer is void. It never happened in the eyes of the law. This is the case with Social Security benefits, VA benefits, ERISA-protected retirement plans, and federal government contracts. The original holder keeps the right, and the purported assignee gets nothing. For federal contracts, the attempted transfer can annul the entire contract.5Office of the Law Revision Counsel. 41 U.S. Code 6305 – Prohibition on Transfer of Contract and Certain Allowable Assignments
When the restriction is a contractual anti-assignment clause, the outcome is less absolute. Under both the UCC and the Restatement (Second) of Contracts, such a clause is generally read as a promise not to assign rather than an elimination of the power to assign. The assignment actually goes through and is effective, but the assignor has breached the contract. The non-assigning party can pursue breach-of-contract remedies, which might include damages or termination.
The result flips only when the contract uses specific language that clearly eliminates the power to assign, not just the right. A clause stating “any attempted assignment is void and of no effect” is treated differently from one that says “neither party shall assign this agreement.” The first voids the transfer; the second creates a breach but does not prevent the transfer from taking effect. The distinction catches people off guard, and it matters enormously in commercial disputes where a third party has already relied on the assignment.