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Companies Act 19,550 · Article 59 — Diligence of administrators: liability

Duties of care and loyalty of administrators (LGS art. 59)

Article 59 of the General Companies Law establishes the conduct standard for every administrator: to act with loyalty and with the diligence of a prudent businessperson. A person who breaches those duties is jointly and severally liable without limitation for damage caused by act or omission. It is the benchmark for the liability of managers and directors.

Source: Act 19,550

What article 59

Article 59 establishes the administrator's fiduciary duties—loyalty and diligence—and joint and several, unlimited liability for breach. Other provisions refer back to this standard, including article 274 for S.A. directors.

Official text · Act 19,550, art. 59

The administrators and representatives of the company must act with loyalty and with the diligence of a prudent businessperson. Those who breach their obligations shall be jointly and severally liable without limitation for the damages resulting from their acts or omissions.

Source: Law 19,550, art. 59 - InfoLEG (updated official text)

Commentary

The duty of loyalty requires placing the company's interest ahead of personal interest: avoiding conflicts, refraining from competing with the company, and not appropriating corporate opportunities. The duty of diligence is measured by a professional standard—the prudent businessperson—more demanding than ordinary private care.

Breach produces joint and several, unlimited liability for resulting damage. Article 59 is the general rule; for directors of an S.A. it is supplemented by article 274, which takes into account the functions assigned to individual directors.

Distinctions often confused

Duty of loyalty is not the same as Duty of diligence / care. Loyalty addresses honesty, conflicts of interest, and fidelity to the company; diligence addresses competence and professional care in management. Either can be breached independently.
Prudent businessperson is not the same as Ordinary private-person standard. Article 59 adopts a professional and more demanding standard: the administrator is expected to exercise the skill and care appropriate to managing another's business.

Practical impact

Article 59 is a principal statutory basis for liability claims against managers and directors. Documenting decisions, recording the business rationale, and abstaining in conflict situations are key protective practices.

Frequently asked questions

What is the diligence of a prudent businessperson?
A professional conduct standard requiring the skill and care expected from someone entrusted with managing another's business.
How is an administrator liable for breach?
Jointly and severally, without limitation, for damages caused by the administrator's acts or omissions.
This page is informational and does not constitute legal advice nor replace professional consultation. It quotes the official text of the rule; for its application to a specific case, consult a licensed professional.

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