Undertakings of Third-Party Actions and Bank Guarantee Letters in Turkish Law of Obligations

A third-party commitment means that one party undertakes that a third party will perform a specific action within the contractual relationship. In Turkish Contract Law, the institution of a third-party commitment is an important guarantee mechanism for the debtor to fulfill their obligations. This institution is frequently encountered, especially in construction projects, commercial contracts, and tenders. This article will discuss the institution of a third-party commitment, its legal structure, and its connection with bank guarantee letters.

1. What is a Commitment to Perform an Act by a Third Party?

A third-party undertaking is when a debtor guarantees that a third party will perform an obligation contractually undertaken by the debtor. In this case, the debtor becomes liable for the third party's conduct. The person undertaking guarantees that the third party will fulfill the obligation stipulated in the contract and assumes responsibility to the creditor if that obligation is not fulfilled.

Article 128 of the Turkish Code of Obligations (TBK) regulates the undertaking of responsibility for the act of a third party as follows: "If a person undertakes responsibility for the performance of a third party, and that third party fails to perform their performance, the person who undertook the responsibility shall be liable to the creditor in the same way as the debtor."

2. Bank Guarantee Letter and the Undertaking Relationship Regarding the Action of a Third Party

Bank guarantee letters serve as a concrete example of a third-party guarantee institution. These letters are issued based on an agreement between the debtor and the bank. The bank undertakes that the debtor will perform a specific act and guarantees payment to the creditor if the debtor fails to fulfill their obligation. In this case, the bank makes a commitment on behalf of the third party (debtor).

2.1. What is a Bank Guarantee Letter?
A bank guarantee letter is a document in which a bank undertakes to pay the creditor if the debtor fails to fulfill their obligations. This letter provides security in debtor-creditor relationships and is frequently used, especially in tenders, construction projects, and large commercial agreements.

A bank guarantee letter essentially means that the bank guarantees the debtor's performance. From this perspective, a bank guarantee letter can be considered an application of the undertaking institution for the actions of a third party.

2.2. Bank Guarantee Letter and the Undertaking Relationship Regarding the Performance of a Third Party's Obligation:
Bank guarantee letters are a typical example of an undertaking regarding the performance of a third party's obligation. Here, the bank undertakes that the debtor (third party) will fulfill their obligation. If the debtor fails to perform, the bank becomes liable and is obligated to make payment to the creditor. The bank's liability here arises when the third party (debtor) fails to fulfill their contractual obligations.

For example, in a construction project, the contractor (debtor) may have committed to completing the construction by a specified date. With a bank guarantee letter, the bank undertakes to pay the creditor (employer) a certain amount if the contractor fails to fulfill this commitment. In this case, the bank becomes a party undertaking the action of a third party.

3. Undertaking and Responsibility for the Actions of a Third Party

According to the Turkish Code of Obligations, when one party undertakes to perform an obligation on behalf of a third party, liability for compensation arises if that obligation is not fulfilled. A similar situation applies to bank guarantee letters. If the third party (debtor) fails to perform their obligation, the bank is obligated to make direct payment to the creditor.

3.1. Debtor's Obligation
If the debtor fails to fulfill their obligation, the bank guarantee letter comes into effect, and the bank makes a payment to the creditor due to the debtor's non-fulfillment of their obligation. At this point, a recourse relationship may arise between the debtor and the bank. The bank may demand payment from the debtor because the primary obligation lies with the debtor.

3.2. Creditor's Rights
If the debtor fails to perform the required obligation, the creditor may apply to the bank that issued the bank guarantee letter. The bank is obligated to make the payment in response to the creditor's request. This demonstrates the security provided by the bank guarantee letter.

4. Application Areas of Bank Guarantee Letters

Bank guarantee letters are used to provide security in various commercial transactions, especially in large projects, tenders, and international trade. They ensure a balanced sharing of risks between the parties and offer the creditor security against the risk of default by the debtor.

4.1. Tenders and Construction Projects
In tenders, bank guarantees are required to ensure that bidding companies will fulfill their obligations. Similarly, in construction projects, bank guarantees are used to guarantee that the contractor will complete the project on time and in accordance with the contract terms.

4.2. International Trade
In international trade, bank guarantee letters are frequently used to eliminate trust issues that may arise due to the parties being located in different countries. Guarantee letters provide security for the commercial relationship between the parties and protect their rights, especially in cross-border trade.

5. Legal Consequences of Third-Party Undertakings and Bank Guarantee Letters

There is a significant link between bank guarantee letters and the undertaking of a third party's actions. A bank guarantee letter provides assurance that a third party will fulfill a specific obligation. Therefore, in debtor-creditor relationships, bank guarantee letters are seen as a reflection of the mechanism for undertaking the actions of a third party.

Letters of guarantee are legal documents that provide security between parties and protect the interests of the creditor in case the debtor fails to fulfill their obligations. However, for these letters to be valid, the contract terms must be clear and unambiguous, and the rights and obligations of the parties must be accurately defined.

6. Conclusion and Evaluation

In Turkish Contract Law, undertaking the performance of a third party's act means that the debtor assumes responsibility for the performance of a third party's obligation. This institution aims to protect the creditor and constitutes an important security mechanism in debtor-creditor relationships. Bank guarantee letters provide a concrete example of this institution. Banks undertake to pay the creditor if the debtor fails to fulfill their obligation, and this guarantee provides security in commercial transactions.

In conclusion, bank letters of guarantee are an important area of ​​application demonstrating the legal functioning of the undertaking institution regarding the actions of a third party. They ensure the debtor fulfills their obligations

This mechanism, which prevents the creditor from suffering losses in case of non-payment, provides security for the parties, especially in commercial life and large projects.