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Case Law Analysis 2026-08-25 12 min read以中文閱讀

Employee Signed Without Consent: Is the Company Bound?

Learn how apparent authority under Civil Code Article 169 binds companies to unauthorized contracts signed by employees and how to manage seal risks.

WCWCTech Co., Ltd.The team behind AgreeGold
TL;DR

Companies may be liable for unauthorized employee contracts if they create an appearance of authority through seals or titles. Civil Code Article 169 protects good-faith third parties unless the company proves the party knew of the lack of authority. Proper seal management and job title oversight are necessary to prevent these legal traps.

“We never saw this contract. It was signed privately by a sales manager. The company does not recognize it.” This is the standard response from many small and medium-sized enterprise (SME) owners when a supplier arrives demanding payment based on a purchase agreement bearing a company seal and an employee's signature. However, in legal logic, a company’s subjective lack of authorization does not automatically equate to an objective lack of responsibility.

At AgreeGold, we frequently encounter these authority disputes while helping companies refine their contract workflows. When an employee signs a contract beyond their authorized scope, the situation falls under two core concepts in the Civil Code: unauthorized agency and apparent authority. Whether a company must pay for an employee’s private actions depends on whether the company’s conduct created an objective illusion that the employee had the power to represent the firm.

Under Article 103 of the Civil Code, an expression of intent made by an agent in the name of the principal within the scope of their delegated authority takes effect directly for and against the principal. This means that when an employee signs within their authorized bounds, the rights and obligations of the contract belong to the company. The legal problem arises when an employee crosses that boundary.

Article 170, Paragraph 1 of the Civil Code states: “A juristic act done by a person having no power of agency as an agent in the name of a principal is not effective against the principal unless ratified by the principal.” On the surface, this suggests that if an employee lacks authority, the company can simply refuse to recognize the contract. However, this rule is not an absolute shield. The law must balance this against the protection of third parties who acted in good faith, relying on company business cards or official seals.

If a company refuses to ratify a contract, the unauthorized agent—the employee—is liable for damages to the other party under Article 110 of the Civil Code. In practice, however, employees often lack the financial means to provide compensation. The counterparty will inevitably turn to the company for relief, at which point the concept of apparent authority becomes the center of the dispute.

Why Lack of Authorization Might Not Save the Company

Article 169 of the Civil Code defines the requirements for apparent authority: “A person who by his own acts represents that he has conferred the power of agency to another person, or who knows that another person represents himself to be his agent and fails to express his opposition, is liable to third parties for the acts of such person as if he had conferred the power of agency.” The logic here is that if a company’s behavior leads the outside world to reasonably believe that a person is authorized to sign, the company must bear the consequences. It cannot later hide behind internal lack of authorization.

Apparent authority usually manifests in two ways. The first is an active representation. This happens when a company gives a seal to an employee for safekeeping, prints business cards with representative titles like General Manager or Branch Head, or has allowed the employee to sign similar contracts in the past. The second is a passive tolerance. This occurs when the company knows an employee is acting as an agent but takes no steps to stop it. If either condition is met, and the counterparty is not aware of the lack of authority, the company must fulfill the contract.

Article 107 of the Civil Code further reinforces this: “The limitation or revocation of the power of agency cannot be set up against a third party acting in good faith.” If a company has an internal rule stating that a manager can only sign contracts up to $1 million, but the manager signs for $2 million, the company is still liable for the full $2 million if the counterparty was unaware of the internal limit. The law prioritizes the stability of external transactions over internal corporate governance.

In contract drafting and signing processes, the protective mechanisms companies think they have often differ from how the law actually applies. We have analyzed common clauses against legal requirements to show where the risks lie.

Legal Standard: Even if the contract specifies these conditions, if the company habitually performs contracts signed only with a “Contract Only Seal” or a “Purchase Seal” held by that employee, an appearance of authority is created under Article 169. If the counterparty can prove that past transactions were handled this way, the company cannot easily claim the contract is invalid for lacking the representative’s personal seal. The law examines the actual possession of the seal and the company’s history of tolerance rather than just the text of the clause.

Legal Standard: This clause is an internal limitation on agency. According to Article 107, such a limit cannot be used against a good-faith third party unless the company proves the third party knew of the limit. If the company gives an employee the title of Purchasing Manager and provides them with relevant stamps, the counterparty has reason to believe the position carries signing authority. Unless the company provides written notice of specific limits to the counterparty before signing, a single line of text within the contract is rarely enough to eliminate the risk of apparent authority.

Common Clause: This contract becomes effective upon signing by both parties

Legal Standard: When a contract only requires a signature without specifying a seal, the law looks at whether the signer’s professional behavior was sufficient to represent the company. If the employee signs in the company office, uses company letterhead, and the contract subject matter matches their job description, the appearance of authority is very strong under Article 169. In this scenario, the burden of proof shifts to the company. The company must prove that the counterparty knew or should have known the employee lacked authority. Proving a negative state of mind in a counterparty is a high evidentiary bar.

Evidence and the Burden of Proof

When a dispute reaches the stage where apparent authority is claimed, the outcome depends on who can prove what. The party claiming the contract is valid—the third party—must first prove the facts that created the appearance of authority. This includes showing that the employee possessed the company seal, used an official title, or that the company had ratified similar acts in the past.

Once the appearance of authority is established, the burden shifts to the company. To escape liability, the company must prove the proviso of Article 169: that the third party knew the agent had no power of agency or should have known through negligence. The law does not protect a third party who was aware of the truth or who ignored obvious red flags. For example, if a contract is signed in a private cafe at midnight for a price 50% below market value, the company can argue that the counterparty failed their duty of care and should have known something was wrong.

We also look at the “Seal Possession” factor. If a company allows an employee to keep the company seal overnight or take it out of the office without supervision, the company is often seen as having “represented by its own acts” that authority was granted. The physical control of the seal is one of the strongest indicators of authority in the legal system.

Risk Self-Checklist for Agency and Seal Management

To prevent being forced into unauthorized contracts, companies should not rely on legal arguments after the fact. Management must start at the front end with process control and specific contract language. We suggest SME owners and legal staff use the following checklist:

  1. Audit of Seal Possession and Public Authority: Does the company allow non-authorized personnel to hold seals with representative power, such as the official company seal or contract-specific stamps? Do employee titles on business cards or the company website match their actual signing authority? If internal monetary limits exist, these should be disclosed to long-term partners to remove the basis for good-faith reliance.
  1. Employee Exit and Role Change Procedures: When an employee leaves, is there a recorded process for recovering business cards, seals, and ID badges? For long-term suppliers or clients, has a formal notice of personnel change been sent, explicitly stating that the individual no longer has the power of agency as of a specific date? This action cuts off the continuation of “representation by acts” under Article 169.
  1. Contract Effectiveness Requirements: Does the contract include specific conditions for validity, such as “Requires the official company seal and the signature of the legal representative”? Such clauses increase the counterparty’s duty of care. If a counterparty accepts a signature from a lower-level manager despite this clause, it is easier for the company to argue that the counterparty was negligent in verifying authority. Also, check past performance records: has the company ever performed a contract that didn't follow these rules? If so, you may have already established a pattern of tolerance that overrides the clause.
  1. Transaction Habits and Reconciliation: Does the company regularly reconcile contracts and audits? If an employee signs a private deal and the company unknowingly begins receiving goods, paying invoices, or issuing tax receipts, these actions can be viewed as “implied ratification” under Article 170. Establishing a reconciliation process independent of the sales department is the first line of defense against unauthorized acts.

FAQ

If a former employee uses an old business card and seal to sign a contract, is the company liable?

This depends on whether the company fulfilled its duty to notify. Under the logic of Articles 107 and 169, if the company failed to recover the seal and business cards or failed to notify existing clients of the termination, the company has allowed the appearance of authority to persist. If the counterparty acts in good faith and without negligence, the company remains liable as the principal. Recovery records and public notices are necessary legal defenses during employee offboarding.

What if an employee makes a fake seal that looks exactly like the company seal?

If the seal is a pure forgery and the company never used that fake seal in any transaction or allowed the employee to use it, apparent authority generally does not apply. This is a case of simple unauthorized agency or even criminal fraud. Under Article 170, the contract is not effective against the company unless ratified. However, if the company’s management was so negligent that it allowed the employee to handle all company correspondence and seals for years without oversight, a counterparty might still argue that the company created the environment for the fraud to occur.

Is a contract signed only with a department seal or an invoice seal legally binding?

Invoice or department seals are usually considered stamps for specific purposes. If an employee uses them for a general commercial contract, the company can argue that the seal was insufficient to represent the company for that purpose. However, if the company has accepted and performed contracts signed with an invoice seal in the past, this constitutes a failure to express opposition under Article 169. In such cases, the company cannot suddenly claim the seal was improper only when it wants to cancel the deal.

If we find an unauthorized contract but like the terms, how do we make it valid?

Under Article 170, Paragraph 1, an unauthorized act is in a state of “pending effectiveness.” The company can ratify the contract through a written or verbal statement to the counterparty. Once ratified, the contract is valid from the moment it was originally signed. The counterparty also has the right under Article 170, Paragraph 2, to set a reasonable deadline for the company to decide. If the company does not respond within that timeframe, it is legally deemed a refusal to ratify.

Does adding a “Must be signed by the CEO” clause actually work?

Such clauses increase the counterparty’s duty to investigate. If the contract explicitly states that it is only valid with the CEO’s signature and the official company seal, and the counterparty accepts a signature from a junior manager instead, the law is more likely to find that the counterparty “should have known” about the lack of authority. Under the proviso of Article 169, if the third party is negligent in not knowing the lack of authority, the company is not liable. This makes the clause a functional risk prevention tool.

WC
By
WCTech Co., Ltd.
The team behind AgreeGold

WCTech Co., Ltd. builds advanced AI solutions for legal and intellectual property work. We combine legal expertise with technical innovation — measurable RAG systems, vector databases and agentic pipelines — to deliver automation already running reliably in production for Taiwan's electronics industry, Taiwanese and US law firms, software companies and traditional industries, helping them achieve concrete cost savings and efficiency gains.

Every piece on this blog is grounded in Taiwan's court-judgment corpus and central regulations, with each claim cited so readers can verify it.

This article is general legal information, not legal advice for any specific case. Please consult a qualified lawyer for your situation.

Tags:Apparent AuthorityUnauthorized AgencyCivil Code Article 169Contract ManagementLegal Risk

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