Disputes over costs arising in processing activities often stem from changes in production requirements, design adjustments, product additions, or extensions of contract performance without specific supplementary agreements between the parties.
I. Current situation of disputes over costs arising in processing activities
In recent years, disputes over costs arising in processing activities have been increasing in both frequency and complexity, particularly in the context of production and business operations being significantly affected by fluctuations in raw material prices, labor costs, logistics expenses, and increasingly stringent technical requirements.

In practice, the current situation of disputes over costs arising in processing activities arises from both subjective and objective causes, primarily revolving around lack of transparency, absence of clear agreements, and failure to establish mechanisms for handling costs arising at the contract formation stage. It serves as a main basis for further analysis of applicable legal provisions and the formulation of solutions to mitigate such disputes.
II. Understanding disputes over costs arising in processing activities
1. What are disputes over costs arising in processing activities?
Disputes over costs arising in processing activities refer to disagreements between the ordering party and the processor concerning the determination, allocation, and payment of costs arising beyond those agreed upon in the original processing contract. These costs may arise during contract performance due to technical modifications, additional products, extended processing periods, or other objective factors.
From a legal perspective, it constitutes a contractual dispute arising from differing interpretations of the scope of financial obligations undertaken by the parties. Such disputes typically involve the processor’s request for additional payment, while the ordering party contends that such costs are already included in the agreed processing price or lack a valid legal basis.
2. What factors may lead to such disputes?
Various factors may lead to disputes over costs arising. A primary cause is the inadequate drafting of processing contracts, particularly the failure to clearly define which costs are included in the processing price, which are considered costs arising, and how such costs should be handled when they arise.
Additionally, changes or additions requested by the ordering party during contract performance, such as modifications to design, technical specifications, or delivery timelines, may generate additional costs for the processor.
Moreover, objective factors such as fluctuations in raw material prices, labor costs, transportation expenses, or force majeure may also lead to disputes if the parties have not clearly agreed on risk allocation mechanisms.
3. Why is it important to clearly determine costs arising?
Clearly defining costs arising is crucial in minimizing disputes and protecting the lawful rights and interests of the parties. When costs arising are specified in terms of their basis, calculation methods, and payment responsibilities, the parties have a transparent framework for fulfilling financial obligations and avoiding subjective or arbitrary interpretations.

From a legal standpoint, clearly identified costs arising serve as a critical basis for determining which party takes such costs and the extent of compensation in the case of a dispute. In dispute resolution proceedings, failure to prove the basis for such costs or the other party’s consent often results in rejection of claims for reimbursement.
4. What is the time limit for claiming reimbursement of costs arising?
The time limit for claiming reimbursement of costs arising in processing contract disputes is governed by the statute of limitations for contractual claims. Under Article 319 of the 2005 Commercial Law, the limitation period for commercial disputes is two (02) years from the date on which the lawful rights and interests are infringed.
Where the parties have agreed on specific time limits for payment or reimbursement of costs arising in the contract, such agreement shall prevail provided it does not contravene the law. Failure to assert claims within the statutory time limit may result in loss of the right to initiate legal proceedings.
III. Legal framework governing disputes over costs arising in processing activities
1. What legal provisions apply to such disputes?
Current laws governing disputes over costs arising in commercial processing activities are primarily based on the 2005 Commercial Law:
- Article 317 provides for dispute resolution methods, including negotiation, mediation by an agreed intermediary, arbitration, or court proceedings. Arbitration and court procedures are conducted in accordance with applicable procedural laws;
- Article 318 regulates complaint time limits: Three months from delivery for quantity-related complaints; six months for quality-related complaints; three months from expiry of warranty for goods under warranty; and nine months from the date the breaching party was required to perform obligations (or from warranty expiry) for other breaches;
- Article 319 provides a two-year statute of limitations for initiating legal action from the date of infringement.
Accordingly, when disputes arise, the parties must comply with the prescribed dispute resolution methods, complaint periods, and limitation periods to safeguard their lawful rights.
2. Who has authority to decide if the parties cannot resolve the dispute themselves?
Where the parties fail to resolve disputes through negotiation or mediation, jurisdiction shall lie with the dispute resolution body agreed upon in the contract or provided by law.
Pursuant to Article 317 of the 2005 Commercial Law, competent authorities include:
- Mediation conducted by an agreed organization, institution, or individual;
- Arbitration, where an arbitration agreement exists, in accordance with the Law on Commercial Arbitration 2010;
- Courts, in accordance with civil procedure laws under the Civil Procedure Code 2015 (as amended in 2025).
The dispute resolution body has the authority to examine the contract, evidence, conduct of the parties, and applicable legal provisions to determine liability for payment of costs arising and compensation (if any).
3. What common breaches occur in such disputes?
In practice, disputes over costs arising are often associated with the following breaches:
- The processor unilaterally performs work beyond the contractual scope and requests additional payment without prior approval from the ordering party;
- The ordering party modifies technical requirements, design, or timelines without renegotiating costs, thereby imposing unforeseen financial burdens on the processor;
- The parties fail to formalize significant changes through contract amendments or appendices, resulting in difficulties in establishing legal grounds for cost claims.
Such breaches not only lead to disputes but also pose significant legal risks, particularly in proving rights and obligations before competent dispute resolution authorities.
IV. Questions regarding disputes over costs arising in processing contracts
1. If the processor fails to timely notify costs arising, will it incur legal liability?
Where the processor fails to provide timely notice of costs arising, such conduct may be deemed a breach of contractual obligations under Clause 1, Article 351 of the 2015 Civil Code.

Under Article 360 of the 2015 Civil Code, a party in breach of an obligation that causes damage must compensate for the entire damage. In addition, the ordering party has the right to unilaterally terminate the contract and claim damages where the processor commits a serious breach of the contract (Clause 2, Article 545 of the 2015 Civil Code).
2. What procedure applies in the event of disputes over costs arising?
When a dispute arises, the parties should first prioritize negotiation and mediation based on the executed contract. If no agreement can be reached, the dispute may be resolved through commercial arbitration or court proceedings in accordance with the dispute resolution mechanism agreed upon in the contract or as prescribed by procedural law.
3. If the processor fails to provide evidence of costs arising, is this considered a breach of contract? Why?
In most cases, failure by the processor to provide evidence of costs arising will be considered a breach of contract.
A claim for payment of costs arising must be supported by valid documents and evidence demonstrating that such costs are genuine, reasonable, and directly related to contract performance. In the absence of such proof, the claim may be rejected, and the processor may be deemed to have failed to fulfill its burden of proof.
4. What issues commonly make it difficult to determine costs arising in disputes?
Difficulties often arise where the contract does not clearly define what constitutes costs arising, lacks a prior cost approval mechanism, involves incomplete documents, or where such costs arise from multiple overlapping causes (e.g., fault of the ordering party, objective factors, or changes in requirements). These factors complicate the allocation of liability for such costs.
5. What measures can be taken to minimize disputes over costs arising in processing contracts?
To mitigate disputes, the parties should clearly stipulate in the contract the scope of costs, conditions for incurring additional costs, notification obligations, approval mechanisms, and payment methods. In addition, maintaining comprehensive documentation and ensuring regular written communication and confirmation throughout contract performance are effective preventive measures.
V. Are you looking for a reputable law firm to assist with disputes over costs arising in processing contracts?
Disputes over costs arising in processing contracts are often associated with complex issues relating to evidence, contractual obligations, and liability for damages. Seeking advice from a qualified lawyer or reputable law firm at an early stage of the dispute will help businesses accurately assess legal risks, select appropriate dispute resolution strategies, and effectively protect their lawful rights and interests.
The above information is provided for reference purposes only. Should you require detailed advice for a specific case, please contact NPLaw Firm for prompt consultation.