Contract Disputes in Vietnam: 8 Contract Matters Foreign General Counsels Must Get Right

Introduction: Contract Disputes in the Recognition and Enforcement of Foreign Arbitral Awards in Vietnam

When you discuss about contract disputes in Vietnam, most of the time, you might think about what happens when a deal goes wrong. You could go on and discuss breaches, delays, non payment, termination, or damages.

We now take a different starting point.

We talk about what happens after a dispute has already been decided, often by arbitration, and one party believes it has won and now proceed to recognition and enforcement stages in Vietnam.

In practice, many foreign companies in Vietnam follow a familiar path:
1. A contract is signed and performed.
2. A dispute arises.
3. The parties go to arbitration.
4. An arbitral tribunal issues an award.
5. The winning party moves to enforce or recognize and enforce that outcome in Vietnam under New York Convention.

At this final stage, something unexpected would happens.

Vietnamese courts do not simply look at the arbitral award.
They may look back at the contract itself, sometimes in detail, to assess whether the agreement was valid, properly authorized, and compliant with Vietnamese law.

This means that even when:
• the contract has been used for years,
• the parties have fully performed,
• and an arbitral tribunal has ruled on the merits,

the contract can still become the central issue again at the recognition and enforcement stage in Vietnam.

Why Need To Think Early About Enforcement in Contract Disputes in Vietnam

When it comes to the time to enforce an arbitral awards issued by Vietnam arbitration or to recognize and enforce a foreign arbitral awards in Vietnam, the issue would arise. Although many contract disputes in Vietnam do not fail on commercial merits, they fail because the contract itself cannot survive judicial review.

Vietnamese courts and arbitral tribunals emphasize:

• authority,
• written consent,
• legal form,
• and documentary integrity.

As a result, contract disputes in Vietnam often shift away from who breached question to more basic questions:

• Did a valid contract exist?
• Who had authority to bind the company?
• Can the agreement be proven cleanly?

For foreign general counsels, it is important to think about enforceability long before a dispute arises.

How Contract Design Shapes Contract Disputes in Vietnam

International arbitration theory emphasizes autonomy, separability, and minimal court intervention. But in contract disputes in Vietnam, decision makers often apply a stricter, document driven approach.

Vietnamese courts typically ask:

1. Was the contract validly formed?
2. Was it signed by the right person?
3. Is the arbitration clause clearly binding?
4. Does the contract comply with mandatory law?
5. Can the contract be proven without ambiguity?

If any answer is uncertain, the dispute escalates regardless of commercial fairness.

8 Contract Matters That Define Contract Disputes in Vietnam

1. Authority to Sign the Contract

One of the most frequent triggers of contract disputes in Vietnam is lack of signing authority.

We see in many cases, contracts are often signed by sales managers, project leaders, or foreign executives without valid authorization.

Vietnamese law applies a strict test that authority must exist at the time of signing.

For instance, in a Hanoi court case, an arbitral award was annulled because the contract was signed by a project director without proper authorization. The company had performed the contract for years, but the court focused solely on authority at signing, not later conduct.

Therefore, the general counsels need to make sure they verify the legal representative or require a valid Power of Attorney before execution. Authority risk is dispute risk.

2. Power of Attorney: Form, Scope, and Legalization

In cross border contract disputes in Vietnam, defective Powers of Attorney are a recurring problem.

Common issues include:

• expired POAs,
• POAs lacking arbitration authority,
• foreign POAs not consularly legalized.

Vietnamese courts treat representation capacity as a foundational legal requirement.

For instance, a Ho Chi Minh City court set aside an arbitral award after finding that a foreign Power of Attorney used in the arbitration had not been properly legalized. The court viewed this as a violation of basic legal order.

Therefore, the company’s general counsels should treat POAs as jurisdictional documents, and not forget to legalize, authenticate properly.

3. Contract Formation: Clear Written Consent Matters More Than Performance

Foreign companies often assume that performance proves agreement.

In contract disputes in Vietnam, this assumption is risky.

Problems arise when:

• contracts are unsigned,
• arbitration clauses appear only on invoices or many times in small letters in terms and conditions,
• email exchanges are treated as final agreements.

Vietnamese courts prioritize clear written consent.

For instance, in a dispute involving long term supply, a court rejected arbitration jurisdiction because the arbitration clause appeared only on delivery notes. Continuous performance did not cure the lack of formal agreement.

Therefore, if it is not clearly agreed in writing, the general counsels expect it to be challenged in a contract dispute in Vietnam.

4. Arbitration Clause Quality and Party Binding

Defective arbitration clauses are a major source of escalation in contract disputes in Vietnam.

Typical issues include:

• incorrect party names,
• references to affiliates instead of contracting entities,
• conflicting dispute resolution clauses.

Vietnamese courts could interpret arbitration clauses narrowly and literally.

For instance, a Vietnamese court refused to recognize arbitration jurisdiction where the clause named a parent company instead of the actual contracting party, even though the commercial relationship was clear.

Therefore, general counsels would note that arbitration clauses are not boilerplate

5. Contract Scope and Dispute Scope Alignment

Many contract disputes in Vietnam arise when tribunals are asked to decide matters outside the contract’s scope.

Examples include:

• reliance on side letters,
• NDAs not covered by the arbitration clause,
• claims based on improperly executed amendments.

Tribunal authority derives strictly from party consent.

For instance, in one annulment case in Vietnam, a court held that the tribunal exceeded its mandate by deciding issues not expressly submitted by the parties, even though the issues were commercially connected.

It is important for the general counsels to remember to align contract scope and dispute scope carefully.

6. Mandatory Vietnamese Law and Contract Legality

Some contract disputes in Vietnam arise because the contract violates mandatory law.

High risk areas include real estate, financial, banking and other conditional sectors.

Even a favorable arbitral award cannot legitimize illegality.

For instance, a court in Vietnam declined to support an arbitral outcome where the underlying contract involved an unlicensed business activity, holding that enforcement would violate fundamental legal principles.

Therefore, for general counsels, compliance review is part of contract governance, not a post dispute exercise.

7. Contract Amendments and Post-Signing Governance

Disputes often arise from what happens after signing.

Common issues include:

• amendments signed by unauthorized persons,
• side letters contradicting the main contract,
• informal email modifications.

Courts may question whether such changes were validly made.

Therefore, for general counsels, it is necessary to apply the same authority and execution standards to amendments as to the original contract.

8. Contract Execution and Documentary Integrity

In Vietnam, a contract must not only exist, it must be provable.

This is not about litigation evidence created later.

It concerns execution discipline from day one.

Weaknesses include:

• inconsistent language versions,
• missing annexes,
• poor document retention.

For instance, in Vietnam, a court questioned enforcement where the parties submitted inconsistent versions of the contract, with unsigned annexes and unclear signing sequences. The dispute shifted from breach to existence.

Therefore, for the general counsels, documentary integrity is a contract issue, not a litigation issue.

Step-by-step: Manage Contract Disputes in Vietnam

Step 1: Confirm the parties and the signing authority

• Verify the Vietnamese counterparty’s legal name, registration number, and legal representative.
• Decide who will sign on your side and whether a Power of Attorney is needed.

Step 2: Lock the commercial deal terms

• Scope of work.
• Acceptance criteria.
• Payment milestones.
• Delivery terms.

Step 3: Choose governing law and dispute resolution strategy early

• Governing law of the contract.
• Arbitration vs court; if arbitration, specify institution, seat, language, number of arbitrators.

Step 4: Draft the arbitration clause like it’s the most valuable paragraph

• Ensure the clause binds the correct entities
• Ensure it covers contract, non contract claims, side letters, and amendments.

Step 5: Check Vietnam mandatory law

• Conditional sectors, foreign exchange, payment flows, interest, penalties, data protection and privacy regulations if relevant.
• If something is sensitive, add compliance representations and a lawful performance clause.

Step 6: Control amendments and side communications

• Make sure no amendment unless in writing and signed by authorized representatives.

Step 7: Execute cleanly and preserve documentary integrity

• Signed signature pages, stamped where used, annexes initialed, signed.
• Consistent bilingual versions and specify which language prevails.
• Centralized storage, originals and signing evidence.

Step 8: Build a dispute ready record while the relationship is still friendly

• Delivery, acceptance records, change orders, meeting minutes, payment confirmations.

FAQ: Questions Relevant to Contract Disputes in Vietnam

Q1: What causes contract disputes in Vietnam most often?

Authority issues, unclear formation, weak arbitration clauses, amendment chaos, mandatory law conflicts, and poor documentary integrity.

Q2: Can we sign a contract by email or scanned PDF in Vietnam?

Often yes in practice, but enforceability depends on clear evidence of mutual consent and authority. For higher risk deals, use clean execution formalities and preserve a reliable signing trail.

Q3: If we performed the contract, can the other side still argue the contract is invalid?

Yes. In contract disputes in Vietnam, performance does not always cure defects in authority, formation, or mandatory legal requirements.

Q4: What is the number one signing mistake foreign companies make in Vietnam?

Letting a counterparty’s commercial head sign without verifying legal authority or a valid Power of Attorney.

Q5: Do we need a Power of Attorney for a foreign director or manager to sign?

If the signer is not the legal representative shown on the business registry, a Power of Attorney is typically needed.

Q6: Should we choose Vietnam law or foreign law as governing law?

It depends on value of contract, deal type, regulatory exposure, assets location, and enforcement strategy. If performance and assets are in Vietnam, Vietnam law may reduce friction; but many cross border deals choose foreign governing law with a Vietnam seat or offshore seat depending on risk tolerance and of course the cost of disputes in relation to the value of the contract.

Q7: Where should we seat the arbitration (Vietnam vs others)?

Vietnam seat can be efficient for Vietnam centric disputes but is more formalistic. In the region, Singapore and Hong Kong are benchmark pro-arbitration seats with strong non intervention traditions. Choose based on where enforcement will happen and how much court supervision you can accept. 

Q8: Do Vietnamese courts enforce arbitration awards?

Vietnam is a New York Convention state, and enforcement is available, but outcomes depend heavily on clean procedure and strong contract documents.

Q9: What makes an arbitration clause invalid or risky in Vietnam practice?

Wrong party names, conflicting clauses, unclear seat, institution, clauses hidden in unsigned documents, or lack of proof both parties agreed.

Q10: Can a side letter or email change the contract?

It can unless your contract does not allow it.

Conclusion: Contract Governance Is Dispute Strategy

In Vietnam, contract disputes are rarely won by arguments alone.

They are decided by preparation, formality, and discipline.

Strong contracts:

• reduce jurisdictional challenges,
• simplify arbitration,
• improve enforceability.

For foreign general counsels, mastering these eight contract matters is the most effective way to manage contract disputes in Vietnam.

About ANT Lawyers, a Law Firm in Vietnam

We help clients overcome cultural barriers and achieve their strategic and financial outcomes, while ensuring the best interest protection, risk mitigation and regulatory compliance. ANT Lawyers has lawyers in Ho Chi Minh city, Hanoi, and Danang, and will help customers in doing business in Vietnam.