Assignment of Contract Rights

Contracts do not always remain between the same parties from beginning to end. A person who has the right to receive money, goods, services, or some other contractual benefit may want to transfer that right to someone else.

Contract law generally permits this through an assignment of contract rights.

An assignment occurs when one party transfers a contractual right to another person. The person transferring the right is the assignor, while the person receiving it is the assignee. The person who owes the contractual performance is commonly called the obligor.

For example, suppose Alice is entitled to receive $10,000 from Bob under a contract. Alice may assign her right to receive that payment to Carol. Carol then becomes the person entitled to receive the payment, subject to the applicable rules governing assignments.

Assignment is therefore fundamentally about the transfer of a right, not the transfer of a duty.

That distinction is essential because transferring a contractual duty generally involves delegation, while transferring a contractual right involves assignment.

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1. What Is an Assignment of Contract Rights?

An assignment is a transfer of a contractual right from one party to another.

Consider this simple structure:

Original contract:

Alice → has a right to receive $10,000 → Bob

After assignment:

Carol → has a right to receive $10,000 → Bob

Alice is the assignor.

Carol is the assignee.

Bob is the obligor.

The original contract between Alice and Bob does not necessarily disappear. Instead, a particular contractual right has been transferred to Carol.

This is one of the most important features of assignment:

Assignment generally transfers a right without transferring the entire contractual relationship.

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2. Assignment Is Different From Delegation

Assignment and delegation are often confused because both involve changing who participates in contractual performance.

But they concern opposite sides of the contractual relationship.

Assignment

Assignment transfers a right.

For example:

Alice has the right to receive $10,000 from Bob and assigns that right to Carol.

Delegation

Delegation transfers a duty.

For example:

Alice has the duty to provide consulting services to Bob and delegates that duty to Carol.

The distinction can be summarized as follows:

Assignment	Delegation
Transfers a right	Transfers a duty
Assignor transfers contractual benefit	Delegator transfers contractual performance
Assignee receives the right	Delegatee undertakes the duty
Usually concerns who gets paid or receives performance	Usually concerns who performs

Sometimes both occur in the same transaction.

For example, a business may transfer its contractual rights to another company while separately arranging for another entity to perform its contractual duties.

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3. Why Are Contract Rights Assignable?

The law generally favors the transferability of contractual rights.

There are several reasons.

First, contractual rights can have economic value.

A right to receive $100,000 in six months may itself be a valuable asset.

Second, assignment facilitates commercial transactions.

Businesses can:

• sell accounts receivable;
• transfer payment rights;
• assign insurance proceeds;
• finance contractual claims;
• transfer rights as part of a merger or acquisition; or
• use contractual receivables as financial assets.

Third, restricting assignment unnecessarily could interfere with freedom of contract and commercial flexibility.

For these reasons, the general principle is that many contractual rights are assignable unless a legal or contractual rule provides otherwise.

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4. What Exactly Is Transferred?

An assignment transfers the contractual right, not necessarily the entire contract.

Suppose a construction company is entitled to receive progress payments from a property owner.

The company assigns its right to receive those payments to a bank as security for a loan.

The bank may acquire the right to receive the payments without becoming responsible for completing the construction project.

The distinction is important.

The assignment may transfer:

• the right to payment;
• the right to receive goods;
• the right to demand performance;
• a right to insurance proceeds;
• a claim arising from breach; or
• another contractual benefit.

But it does not automatically transfer the assignor’s corresponding duties.

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5. Present Rights and Future Rights

A contractual right may already exist when it is assigned, or it may arise in the future.

For example, a person may assign:

“The right to receive the payment currently owed under the contract.”

This is a present right.

But parties may also attempt to assign:

“All payments that become due under the contract during the next five years.”

This concerns future rights.

Future or contingent rights can raise additional questions concerning whether the right is sufficiently identifiable and whether the assignment is legally effective.

Commercial agreements frequently address these issues expressly.

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6. Assignment of a Right to Payment

One of the most common assignments involves money.

Suppose a business has completed work for a customer and is entitled to receive $50,000 in thirty days.

The business may assign the payment right to a financing company.

The financing company may pay the business an amount immediately and acquire the right to collect the $50,000 later.

This is one reason assignments are important in commercial finance.

Accounts receivable can function as valuable assets even though the underlying payments have not yet been made.

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7. Assignment of Other Contractual Rights

Not all assignments concern money.

A party may attempt to assign the right to:

• receive goods;
• obtain services;
• use property;
• receive insurance benefits;
• exercise an option;
• obtain royalties;
• receive a refund;
• enforce certain contractual promises; or
• pursue a contractual claim.

The question is always:

What right does the contract create, and is that right legally transferable?

Some rights are more readily assignable than others.

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8. How Is an Assignment Made?

An assignment generally requires an intent to transfer the contractual right.

No particular magic words are always necessary.

A document stating:

“Alice hereby assigns to Carol all of Alice’s right, title, and interest in the payment due under the agreement”

is a clear assignment.

But conduct or other language may sometimes demonstrate an assignment as well.

The central question is generally whether the assignor intended to transfer the right.

Because assignments can create significant legal consequences, written assignments are strongly preferable in important transactions.

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9. Notice to the Obligor

The obligor does not necessarily have to participate in the assignment.

Alice and Carol may agree that Carol will receive Alice’s payment right without Bob signing the assignment.

But notice can be extremely important.

Suppose Alice assigns her right to payment to Carol but does not tell Bob.

Bob may reasonably continue believing that Alice is entitled to payment.

If Bob pays Alice before learning of the assignment, legal rules may determine whether that payment discharges Bob’s obligation.

Once Bob receives appropriate notice, however, he generally should direct performance to the assignee rather than the assignor.

Notice therefore protects the obligor from paying the wrong person.

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10. The Effect of Notice

Suppose:

1. Alice has a right to receive $20,000 from Bob.
2. Alice assigns that right to Carol.
3. Bob receives notice of the assignment.
4. Bob nevertheless pays Alice.

Carol may have a claim against Bob because Bob had notice that Carol was now entitled to the contractual payment.

The precise consequences can depend on the applicable law and the circumstances.

This illustrates an important practical principle:

An assignment changes who is entitled to receive contractual performance, but the obligor must have a legally sufficient basis for knowing to whom performance should be made.

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11. Assignment Does Not Usually Release the Assignor

Assignment generally transfers a right rather than eliminating the assignor’s entire contractual relationship.

Suppose Alice and Bob have a contract under which Alice must perform services and Bob must pay Alice.

Alice may assign her right to receive payment to Carol.

That does not necessarily mean Alice’s contractual duties to Bob disappear.

This is another reason assignment must be distinguished from novation.

A novation substitutes a new party and releases an original party when the requirements for novation are satisfied.

An assignment normally does not do that by itself.

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12. The Assignee’s Rights

Once a valid assignment becomes effective, the assignee generally acquires the assigned right.

Carol therefore steps into Alice’s position with respect to the assigned right.

If Bob owes $20,000 under the contract, Carol may generally seek that $20,000 after acquiring the payment right.

But Carol usually cannot acquire greater rights than Alice possessed.

This leads to an important principle:

An assignee generally takes the assigned right subject to defenses and limitations applicable to that right.

Assignment does not magically improve the underlying contract.

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13. The Assignee Takes Subject to Defenses

Suppose Alice has a right to receive $50,000 from Bob.

Alice assigns the payment right to Carol.

But Bob has a valid contractual defense because Alice materially breached the underlying agreement.

Carol cannot necessarily eliminate that defense simply because she became the assignee.

The assignment transfers the right as it exists.

This protects obligors from being placed in a worse position merely because the original contracting party transferred its rights.

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14. Defenses Arising From the Original Contract

Depending on the circumstances and applicable law, an obligor may assert defenses such as:

• failure of consideration;
• breach;
• fraud;
• illegality;
• lack of contractual obligation;
• failure of a condition;
• payment;
• contractual limitations; or
• other defenses available against the assignor.

The assignee therefore needs to investigate the underlying contract.

An assignment is not necessarily equivalent to purchasing a guaranteed claim.

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15. Assignment of a Claim After Breach

Contract rights can sometimes include rights arising from breach.

For example, a party may have a claim for damages after the other party breaches the contract.

Whether and how such a claim may be assigned depends on the nature of the claim and applicable law.

This is particularly important because the distinction between an ordinary contractual right and a litigation claim can become significant.

The assignee must determine exactly what is being transferred and whether the applicable jurisdiction permits that particular assignment.

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16. Contractual Restrictions on Assignment

Parties sometimes attempt to restrict assignment in their contracts.

A contract may provide:

“Neither party may assign this agreement without the prior written consent of the other party.”

Or:

“No assignment of rights under this agreement shall be effective without the written consent of the other party.”

Such provisions can affect the parties’ ability to transfer contractual rights.

But their effect depends heavily on the wording and applicable law.

A clause prohibiting assignment of the contract may not necessarily have exactly the same effect as a clause prohibiting assignment of payment rights.

Therefore, courts may need to interpret the precise language.

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17. Anti-Assignment Clauses

An anti-assignment clause is a contractual provision restricting or prohibiting assignment.

These clauses serve legitimate purposes.

A party may have agreed to a contract because of:

• the identity of the other party;
• creditworthiness;
• confidentiality;
• personal trust;
• specialized expertise;
• regulatory requirements; or
• concerns about who will control contractual rights.

But restrictions on assignment can also interfere with ordinary commercial transactions.

Consequently, courts and statutes may distinguish between different types of contractual rights and different types of assignment restrictions.

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18. Assignment of Rights vs. Assignment of the Entire Contract

These concepts should not be confused.

Suppose Alice contracts with Bob to design a building.

Alice may attempt to assign:

“My right to receive payment.”

That is an assignment of a right.

But suppose Alice instead says:

“I transfer my entire position under the contract to Carol.”

Now the transaction potentially involves both rights and duties.

Because Carol would need to assume Alice’s contractual obligations, the transaction may involve delegation or novation rather than a simple assignment.

The distinction matters enormously.

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19. Personal Rights

Some contractual rights may be unsuitable for assignment because they are closely connected to the identity or personal interests of the original party.

For example, suppose a contract gives a person a highly personal benefit that depends upon trust, confidentiality, or individual characteristics.

Transferring that right to another person may fundamentally alter the bargain.

The law therefore recognizes limits on the assignability of certain rights.

The more personal the contractual right, the more carefully the assignment should be examined.

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20. Assignment That Materially Changes the Obligor’s Position

A useful way to analyze assignability is to ask whether the assignment would materially increase the burden or risk imposed on the obligor.

Suppose Bob agreed to provide personal consulting services to Alice.

Alice attempts to assign the right to those services to an unrelated third party.

Bob may have legitimate objections because the identity of the person receiving the services may matter.

By contrast, if Alice assigns a straightforward right to receive a fixed monetary payment, the assignment may impose little or no additional burden on Bob.

This distinction helps explain why payment rights are often more readily assignable than highly personal rights.

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21. Partial Assignment

An assignor does not necessarily have to transfer an entire contractual right.

A party may attempt to assign only part of a right.

For example:

Alice is entitled to receive $100,000 and assigns $30,000 of that right to Carol.

Partial assignments can create practical complications.

The obligor may have to determine:

• whom to pay;
• how much to pay each person;
• whether multiple assignments exist;
• whether the assignment is enforceable;
• whether the assignment creates an unreasonable administrative burden; and
• whether applicable law imposes additional requirements.

Because of these complications, contracts and commercial transactions often address partial assignments expressly.

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22. Multiple Assignments of the Same Right

A particularly difficult situation occurs when an assignor assigns the same right to more than one person.

Suppose Alice assigns her right to receive $50,000 from Bob to Carol.

Later, Alice assigns the same right to David.

Who gets paid?

The answer may depend on:

• the timing of the assignments;
• whether Bob received notice;
• whether an assignee obtained priority under applicable law;
• whether one transaction was revoked;
• whether one assignee gave value; and
• specialized statutory rules.

This is one reason formal assignment documents and prompt notice are important.

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23. Revocation and Irrevocable Assignments

Not every assignment can be freely withdrawn.

The legal effect of an attempted revocation depends on the nature of the assignment and the circumstances in which it was made.

An assignment supported by consideration or structured as part of a commercial transaction may receive different treatment from a gratuitous promise that has not become legally binding.

The assignor should therefore not assume that saying:

“I changed my mind.”

automatically restores the original right.

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24. Assignment for Security

A particularly important commercial form is an assignment for security purposes.

Suppose a business borrows money from a bank.

The business may assign its accounts receivable to the bank as security.

If the business defaults, the bank may have rights against the assigned receivables.

This structure allows contractual payment rights to function as collateral.

Commercial law may impose additional rules governing these transactions, particularly when the assigned rights constitute accounts, payment intangibles, or other forms of collateral.

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25. Assignment and the UCC

For contracts involving the sale of goods, Article 2 of the Uniform Commercial Code contains rules relevant to assignment and delegation.

The UCC also interacts with broader commercial-law principles governing secured transactions and receivables.

For example, a business assigning rights to receive payment may trigger rules under Article 9 when the transaction is structured as a secured transaction.

This demonstrates an important limitation:

Assignment cannot always be analyzed exclusively through traditional common-law contract doctrine.

The underlying transaction determines which legal framework applies.

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26. Assignment and Third-Party Beneficiaries

Assignment and third-party beneficiary rights can produce similar-looking results but arise differently.

An assignee receives a contractual right because a party to the contract transferred that right.

A third-party beneficiary acquires enforceable rights because the original contracting parties intended to benefit that third party in a legally recognized way.

For example:

Assignment:

Alice contracts with Bob and later transfers her payment right to Carol.

Third-party beneficiary:

Alice and Bob enter a contract specifically requiring Bob to pay Carol.

The legal source of Carol’s right is therefore different.

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27. Assignment and Novation

Assignment should also be distinguished from novation.

An assignment generally transfers a contractual right.

A novation substitutes a new party into the contractual relationship and may release the original party.

Suppose Alice contracts with Bob.

If Alice assigns her right to receive payment to Carol, Alice may remain bound by her contractual duties.

If Alice, Bob, and Carol agree that Carol will replace Alice entirely and Alice will be released, the transaction may constitute a novation.

The difference is fundamental:

Assignment	Novation
Transfers a right	Substitutes a party
Does not ordinarily release the original party from duties	May release the original party
Often does not require obligor’s consent	Generally requires agreement of the relevant parties
Concerns a particular contractual right	Replaces the contractual relationship

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28. Assignment and Delegation Together

Some transactions involve both assignment and delegation.

Suppose Alice has a contract with Bob.

Alice has:

• a right to receive $100,000; and
• a duty to provide services.

Alice may:

1. assign the payment right to Carol; and
2. delegate the performance duty to David.

But these are legally distinct transactions.

Carol’s rights and David’s duties must each be analyzed independently.

A delegation also does not necessarily release Alice from liability for performance.

A complete substitution of parties may instead require novation.

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29. The Effect of Assignment on the Original Contract

An assignment does not ordinarily erase the original contract.

The underlying agreement remains relevant because it defines the right that has been assigned.

Suppose Alice assigns her right to payment under a five-year services contract.

Carol cannot determine the scope of her rights simply by reading the assignment document.

She must examine the original contract because that contract establishes:

• the amount payable;
• payment conditions;
• deadlines;
• defenses;
• limitations;
• termination rights; and
• other restrictions.

The assignment transfers the right as defined by the underlying contract.

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30. Assignment and Modification of the Original Contract

After an assignment, questions may arise about whether the original parties can modify the underlying agreement.

For example, Alice assigns her right to receive payments to Carol.

Alice and Bob later agree to reduce the amount payable.

Whether that modification binds Carol may depend on:

• the terms of the assignment;
• whether the assignee’s rights have vested;
• notice;
• applicable law; and
• the nature of the modification.

Once an assignee acquires enforceable rights, the original parties may not always be free to alter those rights without considering the assignee’s interests.

This is one reason assignments should be documented carefully.

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31. Assignment of Future Payment Streams

Commercial contracts sometimes involve a series of payments rather than a single payment.

For example:

“Seller shall receive $10,000 each month for five years.”

The seller may assign the future payment stream.

This can allow the seller to obtain immediate financing rather than waiting for each payment.

But future payment assignments require careful attention to:

• whether future rights are sufficiently identifiable;
• contractual restrictions;
• notice;
• priority;
• defenses;
• applicable commercial statutes; and
• the legal nature of the underlying payment rights.

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32. The Assignee’s Due Diligence

Someone receiving an assigned contract right should not assume that the right is automatically valuable or enforceable.

The assignee should examine:

1. the original contract;
2. amendments;
3. conditions;
4. payment history;
5. existing breaches;
6. defenses;
7. anti-assignment clauses;
8. prior assignments;
9. notices;
10. termination provisions; and
11. applicable statutes.

This is particularly important when purchasing contractual claims as financial assets.

The value of an assigned right depends upon the underlying obligation.

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33. A Practical Example

Suppose a software company, Alpha, has a contract with Beta under which Beta must pay Alpha $200,000 after completing a particular project.

Alpha needs immediate financing.

Alpha assigns its right to receive the $200,000 to FinanceCo.

FinanceCo gives Alpha $180,000 immediately in exchange for the payment right.

Several questions now arise:

• Was the payment right assignable?
• Did the contract restrict assignment?
• Was Beta notified?
• What defenses can Beta assert?
• Had Alpha already breached the contract?
• Is the $200,000 payment conditional on successful completion?
• Does FinanceCo receive the entire right or only a portion?
• Can Alpha and Beta later modify the payment obligation?
• What happens if Beta refuses to pay?

The transaction cannot be analyzed simply by looking at the assignment document.

The original contract remains central.

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34. A Practical Analytical Framework

When analyzing an assignment of contract rights, ask the following questions.

Step 1: Identify the original right

What contractual right exists?

Step 2: Identify the parties

Who is the assignor, assignee, and obligor?

Step 3: Determine the intended transfer

What exactly is being assigned?

Step 4: Examine the contract

Does the underlying agreement restrict assignment?

Step 5: Determine whether the right is assignable

Is there a statutory, common-law, or contractual limitation?

Step 6: Determine whether the assignment was effective

Did the assignor sufficiently manifest an intent to transfer the right?

Step 7: Examine notice

Was the obligor informed?

Step 8: Identify defenses

What defenses could the obligor assert against the assigned right?

Step 9: Check for competing claims

Has the right been assigned previously?

Step 10: Determine the assignee’s remedy

Can the assignee enforce the right directly, and against whom?

This framework provides a practical way to analyze most assignment disputes.

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35. Common Mistakes

Several recurring mistakes cause confusion.

Mistake 1: Treating assignment as delegation

Assignment transfers a right; delegation transfers a duty.

Mistake 2: Assuming the whole contract has been transferred

A simple assignment may concern only one contractual right.

Mistake 3: Assuming assignment eliminates the assignor’s duties

It generally does not.

Mistake 4: Assuming the assignee receives better rights

The assignee generally takes the assigned right subject to applicable defenses and limitations.

Mistake 5: Ignoring anti-assignment provisions

The original contract must always be examined.

Mistake 6: Ignoring notice

Notice can be critical to determining whom the obligor may safely pay.

Mistake 7: Confusing assignment with novation

A novation involves substitution of a party and potentially releases the original party.

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36. The Deeper Principle: Contract Rights as Transferable Property

Assignment reveals something important about the nature of modern contract law.

A contract is not merely a personal promise between two individuals.

Many contractual rights have economic value independent of the identity of the original holder.

A right to receive money can be sold.

A receivable can be financed.

A contractual benefit can become part of a larger commercial transaction.

In this sense, contract law treats many rights as transferable economic assets.

But transferability has limits because contracts also involve expectations, defenses, reliance, and the interests of the obligor.

The law therefore attempts to balance two principles:

Contractual rights should generally be transferable, but transfer should not unfairly change the obligations or defenses of the other party.

That balance explains much of assignment doctrine.

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Key Takeaways

• Assignment is the transfer of a contractual right from an assignor to an assignee.
• The person who owes the performance is the obligor.
• Assignment is fundamentally different from delegation, which transfers a duty.
• Many contractual rights are generally assignable.
• Payment rights are among the most commonly assigned contractual rights.
• An assignment does not necessarily transfer the entire contract.
• Assignment generally does not release the assignor from contractual duties.
• The assignee generally receives the assigned right subject to applicable defenses and limitations.
• The original contract remains essential because it defines the scope and conditions of the assigned right.
• Notice to the obligor can be critically important.
• Contractual anti-assignment clauses may restrict transfer, depending on their language and applicable law.
• Personal or identity-dependent rights may receive different treatment.
• Partial assignments and multiple assignments can create priority disputes.
• Assignment should be distinguished from third-party beneficiary rights and novation.
• Commercial assignments may also be governed by the UCC, including Article 2 and, in appropriate transactions, Article 9.
• The central principle is that assignment facilitates transferability of contractual rights without automatically changing the underlying obligations and defenses.

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Frequently Asked Questions

What is an assignment of contract rights?

It is the transfer of a contractual right from one party, the assignor, to another party, the assignee.

Does assignment transfer the entire contract?

Not necessarily. An assignment may transfer only a particular contractual right, such as the right to receive payment.

Does assignment transfer contractual duties?

No. Duties are generally transferred through delegation, not assignment.

Does the original party remain liable after assignment?

Generally, an assignment of rights does not by itself release the assignor from contractual duties.

Does the obligor have to consent to an assignment?

Not necessarily. Whether consent is required depends on the contract, the nature of the right, and applicable law.

Does the obligor need notice?

Notice is not always required to create an assignment between the assignor and assignee, but it can be extremely important to the obligor’s obligations and to determining whom the obligor may safely pay.

Can an assigned right be subject to defenses?

Yes. The assignee generally takes the right subject to defenses and limitations applicable to the underlying contractual right.

Can a contract prohibit assignment?

Yes. Contracts can contain anti-assignment provisions, although the legal effect of such provisions depends on their wording and applicable law.

Can a person assign only part of a contractual right?

Potentially, yes. Partial assignments are possible in appropriate circumstances but can create additional legal and practical complications.

What is the difference between assignment and novation?

Assignment generally transfers a contractual right. Novation substitutes a new party into the contractual relationship and may release the original party.

Why is assignment important in business law?

Assignment allows contractual rights to function as transferable economic assets. Businesses can sell, finance, or otherwise transfer rights to receive payments and other contractual benefits.

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