Table of Contents
Assignment vs. Delegation: What’s the Difference?
Contracts are usually made between specific parties. But contractual relationships do not always remain exactly the same throughout their entire existence.
A party may want to transfer the right to receive payment to someone else. Another party may want someone else to perform a contractual obligation. A business may sell a contract, transfer receivables, subcontract performance, or reorganize its operations.
Contract law therefore recognizes two important mechanisms:
- Assignment — generally the transfer of a contractual right.
- Delegation — generally the transfer of a contractual duty or performance obligation.
The distinction is fundamental.
If Alice has a right to receive $10,000 from Bob and transfers that right to Charlie, Alice has potentially assigned a contractual right.
If Alice has a duty to provide services to Bob and asks Charlie to perform those services instead, Alice has potentially delegated a contractual duty.
Assignment and delegation are related, but they are not interchangeable.
Most importantly:
Assignment concerns who receives contractual performance. Delegation concerns who performs it.
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1. What Is an Assignment?
An assignment is generally a transfer of a contractual right from one party to another.
The party transferring the right is the assignor.
The person receiving the right is the assignee.
The person who owes the underlying obligation is often called the obligor.
For example:
Alice is entitled to receive $20,000 from Bob under a contract. Alice transfers her right to receive that payment to Charlie.
Alice is the assignor.
Charlie is the assignee.
Bob is the obligor.
If the assignment is legally effective, Charlie may acquire the right to receive the payment.
The important point is that Alice has transferred a right, not necessarily a duty.
2. What Is a Delegation?
A delegation generally occurs when a party transfers responsibility for performing a contractual duty to another person.
The original party who owes the duty is the delegating party or delegator.
The person asked to perform the duty is the delegatee.
For example:
Alice contracts with Bob to paint Bob’s office. Alice asks Charlie to perform the painting instead.
Alice has attempted to delegate her duty to perform the painting.
Charlie is the delegatee.
Bob remains the person entitled to receive the promised performance.
The critical question is therefore different from assignment.
Assignment asks:
Who now has the right?
Delegation asks:
Who will perform the duty?
3. The Basic Difference
The distinction can be summarized simply:
| Assignment | Delegation |
|---|---|
| Concerns rights | Concerns duties |
| Transfers a contractual benefit | Transfers responsibility for performance |
| Assignor → assignee | Delegator → delegatee |
| Example: right to receive payment | Example: duty to provide services |
| Original obligor generally remains obligated to perform | Original obligor may remain liable for performance |
A single contract can involve both.
For example:
Alice agrees to provide consulting services to Bob for $50,000.
Alice may assign her right to receive the $50,000 to Charlie.
Alice may also delegate her duty to provide the consulting services to David, if delegation is permitted.
The two transactions are legally distinct.
4. Assignment of Rights
Contractual rights can often be assigned unless the contract or applicable law restricts the assignment.
Common examples include rights to:
- receive money;
- receive goods;
- receive services;
- enforce certain contractual promises;
- collect accounts receivable.
Assignment is particularly important in commercial transactions.
Businesses routinely assign:
- accounts receivable;
- payment rights;
- insurance rights;
- loan rights;
- intellectual property-related contractual rights;
- other financial interests.
The ability to transfer contractual rights contributes significantly to commercial flexibility.
5. Delegation of Duties
Duties can also sometimes be delegated.
For example:
A landscaping company contracts to maintain a commercial property. The company later hires another landscaping company to perform the work.
The original contractor may have delegated performance.
But delegation does not necessarily mean the original contractor disappears from the contractual relationship.
This is one of the most important differences between delegation and novation.
Delegation transfers performance responsibility to another person, but it does not automatically release the original obligor from liability.
6. Delegation Is Not a Novation
These concepts are frequently confused.
A delegation changes who performs a contractual duty.
A novation substitutes a new party or obligation and releases the original party when the requirements for novation are satisfied.
Consider the difference.
Delegation
Alice owes Bob a duty to perform certain services. Alice asks Charlie to perform them instead.
Alice may still remain liable to Bob if Charlie fails to perform.
Novation
Alice, Bob, and Charlie agree that Charlie will replace Alice as the contracting party and that Alice will be released from the obligation.
If the requirements for novation are satisfied, Alice is no longer liable under the original obligation.
Therefore:
Delegation changes performance. Novation changes the contractual relationship itself.
7. Assignment Does Not Necessarily Transfer Duties
Suppose Alice has a contract with Bob.
Alice has both:
- a right to receive $50,000; and
- a duty to perform services.
Alice assigns her right to receive the $50,000 to Charlie.
That does not automatically mean Charlie has assumed Alice’s duties.
An assignment of rights and a delegation of duties are separate legal acts.
If Alice wants Charlie to perform her obligations as well, there must be a legally effective delegation or another arrangement accomplishing that result.
8. Can Rights and Duties Be Transferred Together?
Sometimes a transaction may effectively transfer both rights and duties.
For example, a business may sell its contractual position to another company.
But when both sides of the contractual relationship are transferred, the transaction may involve more than a simple assignment.
Depending on the circumstances, the parties may need:
- an assignment;
- a delegation;
- an assumption of duties;
- consent from the other contracting party;
- or a novation.
The terminology matters because different legal consequences follow from each mechanism.
9. Restrictions on Assignment
Although contractual rights are often assignable, the right to assign is not unlimited.
Restrictions can arise from:
- the contract itself;
- applicable statutes;
- the nature of the right;
- public policy;
- the effect of the assignment on the obligor.
A contract may contain an anti-assignment clause restricting transfers.
However, the legal effect of such clauses can be complicated.
Under the Uniform Commercial Code, for example, certain restrictions on the assignment of rights may be treated differently from restrictions on the delegation of duties, and some statutory rules limit the effectiveness of contractual prohibitions.
The exact consequences therefore depend on the governing law and the type of contract involved.
10. Assignments That Materially Change the Obligor’s Position
Contract law is generally more willing to permit the assignment of ordinary payment rights than transfers that materially alter the burden placed on the obligor.
For example:
Bob owes Alice $10,000.
If Alice assigns her right to receive the $10,000 to Charlie, Bob’s basic obligation has not necessarily changed.
Bob still owes $10,000.
But imagine that the contract requires Alice to perform highly personal or specialized services for Bob.
The situation becomes very different if Alice attempts to transfer the right to receive performance in a way that would materially alter Bob’s contractual position.
The law therefore distinguishes ordinary transfers from assignments that substantially affect the underlying contractual relationship.
11. Personal Rights and Nonassignable Rights
Some rights are not freely transferable because of their nature.
A right may be difficult or impossible to assign when the identity of the person receiving performance is essential to the agreement.
For example, suppose:
Alice contracts with Bob for a personal portrait painted by Bob.
Alice’s contractual right to have Bob personally perform the painting cannot necessarily be transferred in a way that would require Bob to paint a completely different person.
The nature of the contractual relationship matters.
Contract law recognizes that not every contractual right is simply an interchangeable economic asset.
12. Delegation of Personal Duties
The same principle is especially important for delegation.
Some contractual duties are personal in nature.
If Bob hires a famous architect to design a building specifically because of that architect’s unique expertise and reputation, the architect may not be free to delegate the duty to an unrelated person.
The promisee bargained for the particular person’s performance.
Delegation is therefore more restricted when the identity, skill, judgment, reputation, or personal qualities of the original performer are central to the bargain.
13. Why Personal Services Are Different
Consider two contracts.
Contract A
Alice agrees to deliver 1,000 identical standard products.
The identity of the person performing may not matter much.
Contract B
Alice, a renowned surgeon, agrees to perform a particular operation.
The identity of the performer is central.
Delegation is much more problematic in Contract B.
The patient did not merely purchase “an operation.” The patient contracted for the performance of a particular professional.
This illustrates a broader contractual principle:
The more important the identity and personal qualities of the original performer are to the bargain, the less freely the duty can ordinarily be delegated.
14. Delegation Does Not Automatically Release the Delegator
This deserves special emphasis.
Suppose:
Alice contracts with Bob to repair Bob’s roof. Alice delegates the work to Charlie.
If Charlie performs defective work, Bob may still have a claim against Alice for breach of the original contract.
Why?
Because Alice originally promised Bob that she would provide the contractual performance.
Delegating the work to Charlie may change who actually performs the task, but it does not automatically erase Alice’s contractual promise.
Unless the parties agree to a novation or another legally effective release, Alice may remain responsible.
15. Assumption of Duty by the Delegatee
A delegatee may agree to perform the delegated obligation.
For example:
Alice owes Bob a contractual duty. Alice asks Charlie to perform it, and Charlie agrees.
Charlie may thereby assume obligations toward Alice and, depending on the circumstances, potentially toward Bob.
But the existence and scope of the delegatee’s liability must be analyzed carefully.
The original contract between Alice and Bob does not automatically become a new contract between Bob and Charlie merely because Alice asked Charlie to perform.
The legal consequences depend on the agreement among the parties and applicable law.
16. Assignment and the Assignee’s Rights
An assignee generally acquires the assigned right subject to the limitations attached to that right.
Suppose:
Alice has a right to receive $10,000 from Bob, but Bob has a valid defense against Alice under the contract.
Alice assigns the right to Charlie.
Charlie does not necessarily acquire a better right than Alice possessed.
The assignment transfers the contractual right, but it does not ordinarily erase valid defenses associated with the underlying obligation.
This protects the obligor from having an assignment unexpectedly expand the substance of the original obligation.
17. Notice of Assignment
Notice can be important when a contractual right to payment has been assigned.
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Suppose Alice assigns her right to receive payment from Bob to Charlie.
Bob may not initially know about the assignment.
If Bob pays Alice before learning of a legally effective assignment, questions can arise concerning whether that payment discharges Bob’s obligation.
For this reason, assignees commonly provide notice of assignments to obligors.
Commercial transactions often formalize this process through written notices and records.
The precise legal consequences of payment after assignment depend on the governing law and circumstances.
18. Assignment and Multiple Claims
Assignment can become complicated when the same contractual right is purportedly assigned to multiple people.
For example:
Alice assigns the right to receive $20,000 to Charlie and later attempts to assign the same right to David.
The law must determine which assignment is effective and what remedies may be available.
Issues can include:
- timing;
- notice;
- priority;
- good faith;
- applicable statutes;
- the type of contractual right involved.
Commercial law provides specialized rules for many of these situations.
19. Delegation and the Promisee’s Rights
The promisee is generally entitled to receive the performance promised under the contract.
If the delegator appoints another person to perform, the promisee does not necessarily have to accept a materially different performance.
For example:
Bob hires Alice because Alice possesses specialized technical expertise. Alice delegates the work to someone with substantially different qualifications.
Bob may have grounds to object if the delegation changes the substance or quality of the promised performance.
The law therefore protects the legitimate expectations created by the original agreement.
20. Assignment and Delegation Under the UCC
The Uniform Commercial Code contains important rules governing assignment and delegation in contracts for the sale of goods.
UCC Article 2 generally permits assignments and delegations in ways that facilitate commercial transactions, while also recognizing limits where the transfer would materially alter the other party’s obligations or risks.
The UCC is particularly important because commercial contracts often involve:
- manufacturers;
- distributors;
- retailers;
- suppliers;
- financing companies;
- purchasers;
- accounts receivable.
Commercial law therefore tends to treat contractual rights as transferable economic assets, subject to defined limitations.
21. Assignment vs. Delegation in Employment Contracts
Employment agreements illustrate the importance of personal performance.
Suppose an employee agrees to perform a particular job.
The employee generally cannot simply assign the contractual duty to another person without the employer’s agreement.
The employer hired the particular employee.
Likewise, an employer’s right to receive a particular employee’s services is not necessarily something that can be transferred freely without considering the nature of the employment relationship.
Personal services are therefore an important category in which ordinary transfer principles may be limited.
22. Assignment vs. Delegation in Construction
Construction contracts often involve both doctrines.
A general contractor may:
- assign certain payment rights; and
- delegate particular performance duties to subcontractors.
But the contractor may remain responsible to the project owner for performance under the original contract.
For example:
A general contractor agrees with a property owner to construct a building. The contractor hires an electrical subcontractor.
The subcontractor may perform part of the contractor’s obligations.
But that does not necessarily mean the property owner has replaced the general contractor as the contracting party.
The original contractor may remain liable for the subcontractor’s failure to perform the promised work.
23. Assignment vs. Delegation in Financial Transactions
Assignment is especially important in financial transactions.
A business may have thousands of customers who owe it money.
Rather than waiting for every payment, the business may assign its receivables to another entity, such as a financing company.
The assignee acquires rights to receive the payments.
The customers remain the obligors.
This illustrates why assignment is economically important.
It allows contractual rights to function as transferable assets.
24. Anti-Assignment Clauses and Contract Drafting
Parties who want to control transfers should address assignment and delegation explicitly in the contract.
A well-drafted provision may address:
- whether assignment is permitted;
- whether consent is required;
- whether consent may be withheld;
- whether duties may be delegated;
- whether a merger or sale of the business constitutes an assignment;
- whether assignments of payment rights are treated differently;
- whether subcontracting is permitted;
- whether the original party remains liable after delegation.
Careful drafting can prevent disputes about what the parties intended.
25. Assignment of Rights vs. Delegation of Duties: A Simple Example
Consider this contract:
Alice agrees to provide Bob with monthly maintenance services for one year. Bob agrees to pay Alice $2,000 per month.
Alice has:
- a right to receive $2,000 per month; and
- a duty to provide maintenance services.
Now imagine two separate events.
Event One: Assignment
Alice transfers her right to receive the monthly payments to Charlie.
Charlie may become the person entitled to receive those payments.
Event Two: Delegation
Alice arranges for David to perform the maintenance services.
David becomes the person performing the work.
But Alice may remain liable to Bob for proper performance.
These are separate transactions.
Alice’s assignment of the payment right does not automatically transfer her maintenance duty.
Alice’s delegation of the maintenance duty does not automatically transfer her payment right.
26. What If Both Happen?
Now suppose Alice:
- assigns her right to receive payment to Charlie; and
- delegates her duty to perform services to David.
The contractual relationship may now involve several people:
- Bob remains the original promisee;
- Alice remains the original contracting party unless released;
- Charlie holds the assigned payment right;
- David performs the delegated services.
This demonstrates why lawyers must identify rights and duties separately.
A contract does not necessarily move as one indivisible object.
Different components of the contractual relationship can be transferred in different ways.
27. Assignment, Delegation, and Novation Compared
The three concepts can be summarized as follows:
| Doctrine | What changes? | Original party released? |
|---|---|---|
| Assignment | Contractual right | Usually no |
| Delegation | Contractual duty/performance | Usually no |
| Novation | Contractual party or obligation | Yes, if a valid novation occurs |
The word “usually” is important.
The precise consequences depend on the contract, applicable law, and the parties’ agreements.
But as a general conceptual framework:
Assignment = transfer of rights.
Delegation = transfer of duties.
Novation = substitution that can release the original party.
28. Common Mistakes
Several mistakes repeatedly appear in assignment and delegation problems.
Mistake 1: Treating assignment and delegation as the same thing
They are not.
Assignment concerns rights.
Delegation concerns duties.
Mistake 2: Assuming delegation releases the original party
It usually does not.
A delegator may remain liable if the delegatee fails to perform.
Mistake 3: Assuming every contractual right is freely assignable
Some rights are restricted because of their nature, contractual language, or applicable law.
Mistake 4: Assuming every contractual duty can be delegated
Personal or specialized duties may not be freely delegable.
Mistake 5: Confusing delegation with novation
A delegation does not automatically substitute a new contracting party.
A novation can.
Mistake 6: Assuming an assignee receives unlimited rights
The assignee generally acquires the assigned right subject to applicable contractual limitations and defenses.
29. A Practical Analytical Framework
When analyzing a transfer of contractual rights or duties, ask the following questions.
Step 1: Identify the original contract
Who are the original parties?
Step 2: Identify what is being transferred
Is the party transferring:
- a right?
- a duty?
- both?
Step 3: If it is a right, analyze assignment
Who is the assignor?
Who is the assignee?
Who is the obligor?
Step 4: If it is a duty, analyze delegation
Who is the delegator?
Who is the delegatee?
Who is entitled to receive the performance?
Step 5: Examine restrictions
Does the contract restrict assignment or delegation?
Does a statute impose additional restrictions?
Step 6: Consider personal performance
Is the obligation dependent on the particular identity, skill, judgment, or reputation of the original party?
Step 7: Ask whether the original party was released
Was there merely an assignment or delegation?
Or was there a valid novation?
Step 8: Identify the remaining liabilities
Who can sue whom if performance fails?
Step 9: Determine the governing law
Common-law rules and UCC provisions may produce different results.
This framework prevents the most common conceptual error: treating the transfer of a contractual right as though it were the transfer of the entire contractual relationship.
30. The Deeper Principle
Assignment and delegation illustrate an important characteristic of contract law: contractual relationships have both personal and economic dimensions.
Some contractual rights are highly transferable.
A right to receive $10,000 may be economically valuable regardless of who owns it.
Other contractual obligations are deeply personal.
A person may hire a particular artist, lawyer, architect, surgeon, consultant, or performer because of that individual’s unique abilities.
The law therefore cannot treat every contractual right and duty as an interchangeable commodity.
Assignment facilitates the transfer of economic rights.
Delegation facilitates flexible performance.
Restrictions on both doctrines protect the legitimate expectations created by the original bargain.
The law is therefore attempting to balance two interests:
the freedom to transfer contractual interests and the right to receive the performance that was actually promised.
Key Takeaways
- Assignment generally transfers a contractual right.
- Delegation generally transfers responsibility for performing a contractual duty.
- The person transferring a right is the assignor; the recipient is the assignee.
- The person transferring a duty is the delegator; the person performing it is the delegatee.
- Assignment and delegation are separate legal concepts.
- Assigning a right does not automatically transfer contractual duties.
- Delegating a duty does not automatically transfer contractual rights.
- Delegation ordinarily does not release the original obligor from liability.
- A novation is different because it can substitute a new party and release the original party.
- Personal and specialized duties may not be freely delegable.
- Contractual rights may be restricted from assignment by contract or law, although the effectiveness of such restrictions depends on the circumstances and governing law.
- Assignees generally take contractual rights subject to the limitations and defenses applicable to those rights.
- The UCC contains important rules concerning assignment and delegation in contracts for the sale of goods.
- A single contract can involve both assignment and delegation.
- The key question is always whether the transaction transfers a right, a duty, or the contractual relationship itself.
Frequently Asked Questions
What is the difference between assignment and delegation?
Assignment generally transfers a contractual right, while delegation generally transfers a contractual duty or responsibility for performance.
What is an example of assignment?
If Alice has a right to receive $10,000 from Bob and transfers that right to Charlie, Alice has potentially assigned her contractual right to Charlie.
What is an example of delegation?
If Alice has a duty to perform services for Bob and arranges for Charlie to perform those services instead, Alice has potentially delegated her contractual duty.
Does delegation release the original party from the contract?
Generally no. The original party may remain liable if the delegatee fails to perform. A valid novation, by contrast, can release the original party.
Can every contractual right be assigned?
No. Some rights may be restricted by the contract, statute, the nature of the right, or other legal principles.
Can every contractual duty be delegated?
No. Duties involving personal skill, judgment, reputation, or other unique qualities may not be freely delegable.
Is an assignment the same as a novation?
No. An assignment generally transfers a contractual right. A novation substitutes a new contractual party or obligation and can release the original party.
Can someone assign a right and delegate a duty under the same contract?
Yes. The two transactions are legally distinct and can sometimes occur simultaneously.
Does an assignee become a full party to the original contract?
Not necessarily. An assignee generally receives the assigned contractual right rather than automatically acquiring every right and obligation of the original party.
Why are assignment and delegation important?
They allow contractual relationships to adapt to changing commercial circumstances while protecting the other party’s legitimate expectation of receiving the promised performance.
Conclusion
Assignment and delegation provide two different mechanisms for changing the way a contractual relationship operates.
Assignment concerns rights. Delegation concerns duties.
A party may transfer a right to receive payment without transferring its obligations. A party may arrange for someone else to perform a contractual duty without being released from responsibility for the contract. And where the parties genuinely intend to replace one contracting party with another, a novation may be required.
The distinctions matter because contracts are not simply collections of promises. They create networks of rights and duties belonging to particular people.
Assignment allows certain rights to move.
Delegation allows certain duties to be performed by someone else.
Novation can replace the underlying contractual relationship.
The law permits these mechanisms because contracts must be capable of adapting to commercial and practical realities. But it also imposes limits because the other contracting party bargained for particular rights and, in some cases, particular performance.
The central question is therefore simple:
Has the party transferred a right, delegated a duty, or actually replaced the contractual relationship?
Once that distinction is clear, the rest of the analysis becomes considerably easier.
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