The Concept of ‘The Agency of Multiple Principals’ and Solidary Liability

I. Introduction

This memorandum exhaustively examines the civil law doctrine concerning an agent who acts on behalf of two or more principals in a single transaction, and the consequent implications for solidary liability. The core issue is whether principals who appoint a common agent are held jointly and severally liable to third parties for the acts of that agent performed within the scope of the agency. This analysis is crucial for contractual arrangements involving shared representatives, such as in joint ventures, co-owned property management, or multiple clients engaging a single legal or real estate broker. The discussion will traverse the foundational principles of agency, the specific rules governing multiple principals, the basis for imposing solidary liability, and the relevant jurisprudential interpretations.

II. Statement of the Issue

The primary legal issue is: Under Philippine civil law, when an agent is authorized by two or more principals to act in a single transaction or undertaking, are the principals considered solidary debtors to a third party who contracts with the agent within the scope of the agency? Corollary issues include: (1) the distinction between joint and solidary obligations in this context; (2) the requisite authority from the principals; and (3) the rights of recourse among the principals after one satisfies the claim.

III. Applicable Laws and Doctrines

The analysis is anchored on the following provisions of the Civil Code of the Philippines:
Article 1207: The concurrence of two or more creditors or of two or more debtors in one and the same obligation does not imply that each of the former has a right to demand, or that each of the latter is bound to render, entire compliance with the prestation. There is a solidary liability* only when the obligation expressly so states, or when the law or the nature of the obligation requires solidarity.
Article 1915: If two or more persons have appointed an agent for a common transaction or undertaking, they shall be solidarily liable to the agent for all the consequences of the agency*.
Article 1911: Even when the agent has exceeded his authority, the principal is solidarily liable with the agent* if the former allowed the latter to act as though he had full powers.
Article 2180: The obligation imposed by Article 2176* is demandable not only for one’s own acts or omissions, but also for those of persons for whom one is responsible. Employers shall be liable for the damages caused by their employees and household helpers acting within the scope of their assigned tasks, even though the former are not engaged in any business or industry. The responsibility treated of in this article shall cease when the persons herein mentioned prove that they observed all the diligence of a good father of a family to prevent damage.
Doctrines on agency, apparent authority (ostensible authority), and vicarious liability* are integral to the discussion.

IV. The Foundation of Agency Relationships

Agency is a fiduciary relationship whereby one party (the principal) confers upon another (the agent) the authority to act on the former’s behalf and under his control, and the agent consents so to act. The basic rule is that the acts of the agent, within the scope of his authority, are the acts of the principal. This creates a privity of contract between the principal and the third party. The agent generally drops out of the transaction, incurring neither rights nor obligations, provided he acts within his authority and discloses his agency.

V. The Concept of an Agent for Multiple Principals

An agent may act for several principals in two distinct capacities: (a) as a separate agent for each in different matters, or (b) as a common agent for all in a single transaction or common undertaking. This memo concerns the latter. In such a case, the agent represents the collective interest of the principals. The authority may be conferred by a single power of attorney signed by all principals or by separate but identical powers of attorney. The critical factor is the commonality of the transaction and the shared intent of the principals to be represented as a group vis-à-vis the third party.

VI. Solidary Liability of Multiple Principals: Legal Basis

Article 1915 of the Civil Code is the direct and positive law governing this situation. It states: “If two or more persons have appointed an agent for a common transaction or undertaking, they shall be solidarily liable to the agent for all the consequences of the agency.” While the article explicitly mentions liability to the agent, the underlying principle and the structure of agency law compel the application of solidary liability towards third parties as well. The rationale is threefold:

VII. Comparative Analysis: Joint vs. Solidary Liability in Multiple Principals

The distinction between joint (mancomunada) and solidary (solidaria) liability is paramount. A presumption of joint liability exists under Article 1207. However, in the agency of multiple principals, this presumption is overturned by the specific mandate of Article 1915 and the operative facts.

VIII. Jurisprudential Application and Qualifications

The Supreme Court has affirmed these principles. In Litonjua vs. Fernandez, the Court held that where two persons appointed a common agent to sell their property, they became solidarily liable to the agent for the commission. The logic extends to third-party liability. However, key qualifications exist:
Requirement of Common Transaction: Solidary liability attaches only if the agency is for a “common transaction or undertaking.” If the agent is hired separately for distinct purposes, even if by related parties, solidary liability* does not automatically arise.
Excess of Authority: If the agent exceeds his authority, Article 1911 may apply, making a principal who allowed the appearance of full powers (apparent authority) solidarily liable with the agent for damages to third parties. This is separate from, but can coincide with, the solidary liability among principals under Article 1915*.
Liability for Torts: If the common agent commits a quasi-delict (tort) within the scope of the agency, the principals may be held solidarily liable under Article 2180 (vicarious liability of employers), which also imposes solidary liability*.

IX. Rights and Recourse Among the Solidary Principals

Upon satisfaction of the third party’s claim by one principal, the paying principal acquires a right to seek reimbursement from his co-principals for their respective shares in the obligation. The internal relationship among principals—governed by their agreement or, in its absence, by the rules on quasi-contract (solution indebiti or negotiorum gestio)—determines the proportionate shares. If they are partners or joint venturers, their partnership agreement governs the sharing of losses. Absent any agreement, the presumption is of equal sharing.

X. Conclusion and Recommendations

In conclusion, under Philippine civil law, the concept of an agent for multiple principals in a common transaction triggers solidary liability among the principals pursuant to Article 1915. This solidary liability extends to obligations contracted with third parties by the agent within the scope of his authority. The presumption of joint liability under Article 1207 is superseded by this specific rule. Consequently, a third party may demand full performance from any one of the principals. It is recommended that: