Assignment vs. Delegation — The Critical Legal Distinction
Example Contract Language
"Neither party may assign this Agreement or any rights or obligations hereunder without the prior written consent of the other party. Any purported assignment in violation of this Section shall be null and void. Notwithstanding the foregoing, either party may assign this Agreement to a successor entity in connection with a merger, acquisition, or sale of all or substantially all of its assets."
Assignment and delegation are two distinct legal concepts that most contract clauses conflate under the umbrella term "assignment." Understanding the difference is essential because the rules that govern them — and the consequences of getting them wrong — are not the same.
Assignment Defined. An assignment transfers a party's contractual rights to a third party (the assignee). Rights are the benefits you are owed under a contract: the right to receive payment, the right to receive services, the right to receive a deliverable. When you assign your rights, you transfer those benefits to someone else. Example: a freelancer who is owed $10,000 for completed work assigns that payment right to a factoring company — the factoring company now has the right to collect the $10,000 directly from the client.
Delegation Defined. A delegation transfers a party's contractual duties to a third party (the delegatee). Duties are the obligations you owe under a contract: the obligation to deliver work product, to provide services, to maintain a software platform. When you delegate your duties, you assign the responsibility for performing those obligations to someone else. Example: a consulting firm delegates its duty to provide strategic advice to a subcontractor — the subcontractor now performs the work instead.
Why the Distinction Matters Legally. Under general contract law principles (reflected in the Restatement (Second) of Contracts, §§ 317–328), assignment of rights is generally permitted without consent unless the assignment would materially change the obligor's duty, materially increase the obligor's burden or risk, materially impair the obligor's chance of obtaining return performance, or materially reduce the value of the return performance. Delegation of duties, by contrast, is subject to additional restrictions because it affects who performs — which can matter enormously when the original party was chosen for their specific skills, reputation, or relationship.
The "Assumption" Distinction. When a party delegates duties, the delegatee takes on those duties — but critically, the delegator remains liable unless the other party agrees to release them (which constitutes a novation). A freelancer who delegates her graphic design duties to a subcontractor without the client's agreement to release her remains fully liable if the subcontractor delivers inferior work. This is one of the most misunderstood aspects of contract delegation.
Most Contract Clauses Are Sloppy. The clause quoted above is typical — it restricts "assignment of this Agreement or any rights or obligations," treating assignment and delegation as one concept. Courts generally interpret this language to cover both. However, the legal analysis of whether a specific transfer is permissible differs depending on whether you are transferring rights, duties, or both. When you review a contract's assignment clause, think separately about: (a) Am I restricted from transferring my right to receive payment or other benefits? (b) Am I restricted from transferring my obligation to perform? (c) Is there a difference in the consent required for each?
The Contract vs. the Rights Distinction. When a contract says "You may not assign this Agreement," it typically means you cannot assign the entire contractual relationship — the bundle of rights and duties. This differs from assigning a specific right (like a payment claim) or delegating a specific duty. Some courts distinguish between assigning the contract (the relationship) versus assigning a specific right arising from the contract (a payment claim). Anti-assignment clauses typically restrict both, but contract-specific language controls.
What to Do
When reviewing a contract's assignment clause, identify three things separately: (1) Whether it restricts assignment of your rights (e.g., the right to receive payment — relevant if you might factor invoices or sell your business); (2) Whether it restricts delegation of your duties (relevant if you use subcontractors or might need to hand off work); (3) Whether the restriction is absolute ('shall not') or conditional ('shall not without consent'). The consent standard — whether consent can be withheld arbitrarily or must be reasonable — is the most important variable to negotiate. Most fair assignment clauses say consent 'shall not be unreasonably withheld, conditioned, or delayed.'