What Happens When a Business Partner Breaches Fiduciary Duty?

Published: November 2026

The distributions stopped. A vendor you never approved turns out to be owned by your partner’s brother-in-law. Requests for the books get answered with a shrug. By the time most owners start asking hard questions, the conduct has been running for a good while.

Ohio law gives co-owners real protection in that situation, but the protection depends on the entity type, the governing document, and how quickly you move. Here is how these claims work:

What Is a Fiduciary Duty in an Ohio Business?

A fiduciary duty is a legal obligation to put the company ahead of personal gain. In closely held Ohio businesses, it usually breaks into three parts:

• The duty of loyalty. Account to the company for any profit or benefit taken from its property, its business, or an opportunity that belonged to it, and refrain from dealing with the company as an adverse party or competing with it;
• The duty of care. Refrain from grossly negligent or reckless conduct, intentional misconduct, and knowing violations of law; and,
• The obligation of good faith and fair dealing. Carry out duties and exercise rights honestly, without using technical compliance to strip value from a co-owner.

The duty of care is narrower than people assume. A partner who makes a poor judgment call has not breached it. That partner will rely on something called the “business judgment rule.” A partner who ignores the books for two years while signing checks to himself is in different territory.

Which Ohio Statutes Set the Duties?

Limited Liability Companies

Member duties appear at Ohio Revised Code § 1706.31, and manager duties at § 1706.311. One feature of the current LLC act surprises many owners. Where the company has designated one or more managers, the members themselves owe no duty of loyalty or care; only the obligation of good faith and fair dealing. Who holds a title in your operating agreement can therefore change which claims are available and against whom.

Note also that Chapter 1706 replaced the older Chapter 1705, so guidance written before 2022 may cite a repealed statute.

Partnerships

For general partnerships, Ohio Revised Code § 1776.44 sets the duties of loyalty and care and the obligation of good faith and fair dealing. Of important note, it also states that a partner does not violate a duty merely because the partner’s conduct serves the partner’s own interest, which is why these cases turn on specific transactions rather than general suspicion.

Corporations

Director conduct is governed by Ohio Revised Code § 1701.59. Directors must act in good faith, in a manner they believe serves the corporation, and with the care an ordinarily prudent person in a like position would use. Ohio sets a high bar for challengers: a director is presumed to have acted properly, and a violation must be shown by clear and convincing evidence, which is a much higher burden than the typical preponderance of the evidence found in most lawsuits, although not as high as the criminal beyond-a-reasonable-doubt burden.

What Does a Breach Look Like?

Conduct that regularly supports a claim includes:

• Diverting a company opportunity to a side business;
• Paying inflated amounts to a vendor the partner owns or controls;
• Taking unauthorized distributions, loans, or salary increases;
• Competing with the company while still a member or partner;
• Blocking access to financial records in order to conceal transactions; or,
• Using company funds, equipment, or staff for personal purposes.

Disagreement about strategy is not a breach. Neither is a decision that turned out badly. Both of these fall under the business judgment rule defense. The claims that succeed involve a personal benefit that flowed to one owner at the company’s expense.

Can the Operating Agreement Change the Rules?

To a significant degree, yes. Under Ohio Revised Code § 1706.08, an LLC operating agreement may modify, waive, or eliminate the duties of loyalty and care, or identify specific activities that do not violate them. The obligation of good faith and fair dealing cannot be eliminated, though the agreement may set standards for measuring it.

Partnerships work similarly under § 1776.03. The agreement may identify categories of permitted conduct, but it cannot wipe out the duty of loyalty wholesale or eliminate good faith and fair dealing.

Read your governing document before you read the statute, because the governing document controls; the statute is a backstop. If there are competing terms, the governing document wins. A clause permitting outside ventures or related-party transactions can defeat a claim that would otherwise be strong, and those clauses are common in agreements drafted from online templates.

What Can You Recover?

Remedies depend on the facts, and several often apply at once:

• Money damages for the loss the company or the co-owner suffered;
• Disgorgement of profits the breaching owner took, including property held for the company’s benefit;
• An accounting, which forces a full reckoning of company finances;
• An injunction stopping ongoing conduct or preserving assets while the case proceeds;
• A receivership where the business cannot function during the dispute; or,
• Judicial dissolution where the relationship cannot be repaired.

Many claims are brought derivatively, meaning on behalf of the company, so any recovery returns to the business rather than to you personally. A derivative lawsuit is basically the company suing itself, and it has requirements to follow (such as 90-day notice) before filing.

How Long Do You Have to File?

Breach of fiduciary duty claims in Ohio generally fall under the four-year period in Ohio Revised Code § 2305.09. Claims built on a written operating or partnership agreement follow the eight-year period in § 2305.06.

Those deadlines sound generous until you consider how these disputes unfold. Owners often spend a year hoping the problem corrects itself and another year negotiating privately. Conduct that began four years before the complaint may already be out of reach, even though the pattern continues. This is highly fact-specific.

What Should You Do First?

1. Request the company records in writing you are entitled to receive in writing, and keep the request and any refusal;
2. Preserve emails, texts, bank statements, and accounting files, and suspend any automatic deletion;
3. Pull the operating agreement, partnership agreement, or bylaws, including every amendment;
4. List the specific transactions that concern you with dates and dollar figures;
5. Avoid self-help steps such as locking your partner out or moving funds, which can expose you to your own claim asserted by the wrongdoer or other owners; and,
6. Speak with a business litigation attorney before confronting other business owners.

The order matters. Once a business owner knows that a claim is coming, records tend to become harder to obtain, or the company’s insurance carrier may prematurely get involved.

Getting Help With a Partner Dispute in Ohio:

A fiduciary duty claim turns on your entity type, the terms of your governing document, and the paper trail behind each transaction. Two co-owners with similar complaints can face very different odds depending on what each agreement says and how much they have documented.

Attorney Hunter G. Cavell represents Ohio businesses and owners in partnership and member disputes, and he has been named an Ohio Super Lawyers Rising Star for 12 consecutive years.

If a co-owner has taken something that belonged to the company, you can review the firm’s business litigation and contract services, or contact Cavell Law to discuss your options.