Milwaukee, WI Business Law Attorneys

The legal decisions you make for your business today shape the health of your enterprise for years. Whether you’re forming a new company, negotiating a commercial contract, or dealing with a dispute that threatens to derail operations, the quality of your legal counsel determines how much risk you carry forward.

At Gimbel, Reilly, Guerin & Brown, LLP, our Milwaukee business law attorneys guide Wisconsin businesses through every stage of the lifecycle—from selecting the right entity structure and drafting contracts to resolving disputes at the negotiating table or, when necessary, at trial. We are trial lawyers first, and that changes everything about how we advise you.

What Can Our Milwaukee Business Attorneys Help You With?

Our Milwaukee business attorneys provide legal support across the full business lifecycle. We handle business formation for LLCs, corporations, and partnerships, draft and negotiate commercial contracts, prepare operating and shareholder agreements, advise on internal corporate governance and compliance, guide succession planning, and—when disputes arise—defend your interests through trial.

That breadth matters. Businesses don’t experience legal issues in isolation. A poorly drafted operating agreement leads to a partnership dispute. A contract without a clear termination clause becomes a lawsuit. GRGB’s approach connects the dots across these areas so that the advice you receive at the formation stage accounts for what could happen at the dispute stage.

Business Formation — Choosing the Right Structure

Wisconsin recognizes several business structures, each with different implications for personal liability, taxation, management authority, and how disputes get resolved. The three most common are limited liability companies under Wis. Stat. Ch. 183, corporations under Wis. Stat. Ch. 180, and partnerships under Wis. Stat. Ch. 178.

The LLC remains the most popular choice in Wisconsin. The Wisconsin Department of Financial Institutions registered over 66,000 new business entities through November 2025—an 11.6 percent increase over the same period in 2024—with LLCs accounting for the largest share. That popularity is well-founded: LLCs offer liability protection, tax flexibility, and relatively simple governance requirements.

A critical change took effect on January 1, 2023. Wisconsin’s new Uniform Limited Liability Company Law (WULLCL) overhauled Chapter 183 entirely. Under the new law, an operating agreement may be oral, implied, or in a record, which creates real litigation risk when terms aren’t documented in writing. The law also requires that a manager-managed designation appear in the written operating agreement, not just in the articles of organization. And under Wis. Stat. § 183.0301, a member is not an agent of the LLC solely by reason of being a member—authority to bind the company has to come from somewhere else, such as the operating agreement, a member decision, or ordinary principles of agency law.

These changes make professional legal guidance during formation more important, not less. The decisions made at startup—entity type, management structure, ownership percentages, capital contribution rules—shape liability exposure and tax treatment for years.

Operating Agreements, Bylaws, and Shareholder Agreements

If the entity formation is the foundation, the operating agreement is the blueprint. It defines member rights, profit allocation, management authority, voting procedures, and what happens when someone wants to leave or when a member dies. Without one, Wisconsin’s default statutory rules govern your business—and those defaults may not reflect what the owners actually intended.

For corporations, bylaws and shareholder agreements serve related functions. A shareholder agreement can include buy-sell provisions, drag-along and tag-along rights, restrictive covenants, and dividend policies. These documents also address what happens when an owner dies, becomes disabled, or wants to exit—questions that feel hypothetical until they aren’t.GRGB drafts these documents with an eye toward what happens when relationships break down, because that’s when the language matters most. We’ve seen what happens when businesses operate for years on a handshake and then try to sort out ownership rights after a falling out. It’s expensive, it’s time-consuming, and it’s avoidable.

How Does Contract Review and Drafting Protect Your Business?

Contracts are the foundation of every business relationship—vendor agreements, client contracts, employment arrangements, lease terms, licensing deals. A poorly worded clause or an overlooked provision can cost far more to litigate than it would have cost to draft properly. GRGB’s business attorneys review, draft, and negotiate commercial contracts designed to protect your interests and reduce the likelihood of future disputes.

The numbers tell the story. Contract disputes make up roughly 46 percent of civil filings in state courts nationally, and the median cost of a contract dispute lawsuit for small businesses is approximately $91,000. Small businesses bear 48 percent of commercial tort costs—about $160 billion in 2021—despite generating only 20 percent of total commercial revenue. Investing in contract work upfront isn’t an expense. It’s protection against far greater losses.

Common Contracts GRGB Reviews and Drafts

• Vendor and supplier agreements: Terms governing pricing, delivery, quality standards, liability limits, and termination rights.
• Client service contracts: Scope of work, payment schedules, intellectual property ownership, and limitation of liability clauses.
• Independent contractor agreements: Scope of engagement, deliverables, payment terms, and non-solicitation provisions. How the parties label the relationship is only one factor; the underlying facts of the working arrangement drive classification under state and federal standards.
• Commercial real estate leases: Rent structure, maintenance obligations, renewal options, and default remedies.
• Non-compete and confidentiality agreements: Restrictive covenants drafted with Wis. Stat. § 103.465 in view. Wisconsin applies close scrutiny to restraints on competition, and a covenant found unreasonable may be unenforceable rather than narrowed by a court, so drafting matters a great deal.
• Merger and acquisition purchase agreements: Asset vs. stock purchase structure, representations and warranties, indemnification, and closing conditions.

What Makes a Contract Enforceable in Wisconsin?

Under Wisconsin law, an enforceable contract generally requires offer, acceptance, and consideration. Wisconsin’s version of UCC Article 2, codified at Wis. Stat. Ch. 402, governs contracts for the sale of goods, while common law governs service contracts. Under Wis. Stat. § 402.201, a contract for the sale of goods priced at $500 or more generally is not enforceable without a sufficient writing, though the statute and Wisconsin case law recognize exceptions. Wis. Stat. § 134.49 addresses automatic renewal and extension provisions in certain business contracts.

These aren’t abstract rules. A handshake deal that falls apart three years later becomes a he-said-she-said dispute without written terms. GRGB drafts contracts that hold up in negotiation and, if necessary, in court.

Our attorneys also review existing contracts that clients bring in; vendor agreements inherited from a previous owner, legacy employment contracts, or lease terms that haven’t been updated in a decade. Outdated contracts create liability. A review and update now costs a fraction of what it costs to litigate a dispute over ambiguous language later.

What Should You Do When a Business Dispute Arises?

When a contract is breached, a partner acts against the company’s interests, or a business relationship collapses, the response strategy matters enormously. GRGB business lawyers don’t just mediate—they prepare every matter as if it will go to trial, so the firm is ready for the courtroom when settlement isn’t possible.

GRGB handles both sides of the work. The same attorneys who drafted your agreement can defend it in litigation. That continuity—from advisory work through trial—means nothing is lost in translation when a case moves from the conference room to the courtroom.

From Advisory to Courtroom: GRGB’s Full-Service Approach

GRGB has earned the Quality Business Award for Best Business Law in Milwaukee, the Three Best Rated designation for Best Business Lawyers in Milwaukee, and the Wisconsin Law Journal Reader Rankings for Best Contract Attorney Providers. The firm’s business attorneys hold recognitions including Power 30 designation from the Wisconsin Law Journal for Business Defense Attorneys and AV Preeminent ratings from Martindale-Hubbell.

When business disputes escalate beyond what advisory work can resolve, our commercial litigation attorneys step in. That internal handoff means your litigation team already understands your business, your contracts, and your objectives.

Wisconsin Statute of Limitations for Business Claims

Under Wis. Stat. § 893.43, an action on a contract generally must be brought within six years of when the cause of action accrues. Other limitation periods can apply depending on the type of claim, and the parties’ agreement may affect the analysis. That window sounds generous—until you realize that evidence degrades, witnesses forget, and the other side may be restructuring or moving assets. Early intervention by a business attorney preserves your options and strengthens your position.

Common business disputes include breach of contract, breach of fiduciary duty, shareholder and member disputes, tortious interference with business relationships, misappropriation of trade secrets, and fraud claims. Each of these carries distinct procedural requirements and potential remedies under Wisconsin law. GRGB’s litigation team handles all of them—from initial demand letters through jury verdicts and appeals.

How Does Business Succession Planning Protect What You Built?

A business without a succession plan is a liability. Whether you’re planning to pass ownership to a family member, sell to a partner, or wind down operations, the legal structure you put in place today determines whether that transition is orderly or contested. GRGB has guided Wisconsin business owners through succession and dissolution for decades.

Succession planning isn’t something you do at the end. It’s something you build into your entity structure, your operating agreement, and your shareholder arrangements from the start. When those documents are drafted with succession in mind, the transition—whenever it happens—follows a clear, enforceable path.

Key Succession Planning Tools

• Buy-sell agreements: Define the terms under which ownership interests can be bought, sold, or transferred—triggered by retirement, death, disability, or voluntary departure.
• Shareholder and member buyout provisions: Establish valuation methods, payment timelines, and funding mechanisms (often backed by life insurance or installment terms).
• Business dissolution procedures: When winding down is the right choice, Wisconsin law requires specific steps to dissolve an LLC or corporation and settle debts, distribute assets, and terminate filings with the DFI.
• Coordination with estate planning: Business succession and estate planning overlap significantly. A business owner’s will, trust, and power of attorney documents must align with the business’s succession provisions to avoid conflicting instructions. Our estate planning attorneys work alongside the business law team to ensure both plans work together.

When succession planning breaks down—or when it was never done at all—the result is often a contested probate or a forced dissolution. GRGB’s probate litigation attorneys handle those disputes as well, closing the loop on every stage of business ownership.

Businesses throughout the Milwaukee metro area (from downtown Milwaukee and the Historic Third Ward to Wauwatosa, Brookfield, Waukesha, and the Ozaukee County corridor) rely on GRGB for succession planning that accounts for both the business law and estate planning dimensions of ownership transition.

Why Choose GRGB for Business Law in Milwaukee?

GRGB is not a transactional-only firm. Founded in 1968, the firm combines over 55 years of trial advocacy with deep business law experience—meaning every contract, every agreement, and every entity structure we help create is built with litigation risk fully in view. That perspective protects clients before a dispute ever begins.

Transactional and litigation work sit under one roof here. When a contract drafted by one of our attorneys is later challenged in court, the litigation team already knows the history of the deal and doesn’t have to reconstruct it. The attorney who helped structure your business can walk into a courtroom and defend it.

The firm’s business law credentials include:

• Quality Business Award: Best Business Law in Milwaukee
• Three Best Rated: Best Business Lawyers in Milwaukee
• Wisconsin Law Journal Reader Rankings: Best Contract Attorney Providers
• BBB Accredited with an A+ rating.
• U.S. News & World Report Best Law Firms — Second Tier in Commercial Litigation.

Wisconsin has around 500,000 small businesses, representing more than 99 percent of all Wisconsin businesses and employing roughly half of the state’s workforce. Every one of those businesses needs legal counsel that understands how Wisconsin law works in practice—not just on paper. GRGB has provided counsel from our Milwaukee office for more than five decades.

If your business needs legal guidance—whether you’re forming a new company, reviewing a contract, planning a succession, or facing a dispute—call GRGB at 414-271-1440 or visit our website to schedule your consultation.

Frequently Asked Questions About Business Law

Do I need a separate business bank account to maintain my LLC’s liability protection in Wisconsin?

Keeping business and personal funds separate is a basic practice for any Wisconsin LLC, and commingling is one of the factors courts weigh when deciding whether to disregard an entity and hold owners personally liable. It is worth noting, however, that under Wis. Stat. § 183.0304(2), the failure of an LLC to observe formalities relating to the exercise of its powers or the management of its activities and affairs is not by itself a ground for imposing liability on a member or manager. Veil-piercing turns on the full picture of how the company was operated. Beyond the legal considerations, a separate account simplifies tax reporting and makes it far easier to document business expenses if the IRS or the Wisconsin Department of Revenue ever audits the company.

What is the difference between a member-managed and manager-managed LLC under Wisconsin’s WULLCL?

In a member-managed LLC, the members run the company. Under Wis. Stat. § 183.0407, management rights are generally proportional to the value of each member’s contributions rather than equal across all members, unless the operating agreement provides otherwise. In a manager-managed LLC, designated managers hold that authority and the remaining members function more like passive investors. Under the WULLCL (effective January 1, 2023), the manager-managed designation must appear in the written operating agreement, not just in the articles of organization filed with the DFI. If the operating agreement is silent on management structure, Wisconsin law defaults to member-managed. Note that being a member does not by itself make someone an agent who can bind the company under Wis. Stat. § 183.0301; authority to contract on the LLC’s behalf comes from the operating agreement, a member decision, or general principles of agency law.

Can a minority shareholder force the sale of a Wisconsin corporation?

Not directly, but a minority shareholder has legal remedies when the majority acts oppressively. Under Wis. Stat. § 180.1430, a shareholder can petition the court for judicial dissolution where those in control have acted, are acting, or will act in a manner that is illegal, oppressive, or fraudulent, among other grounds. Depending on the circumstances and the corporation’s structure, a court may consider alternatives to dissolving the company outright, including a buyout of the minority interest. The key is that the minority owner must demonstrate conduct that meets the statutory standard—simply disagreeing with business strategy isn’t enough. A well-drafted shareholder agreement with buy-sell provisions can prevent these situations from reaching litigation in the first place.

How often should I have my business contracts reviewed and updated?

At minimum, every two to three years — and immediately after any significant change in the law, your business operations, or your vendor and client relationships. Wisconsin’s automatic renewal statute (Wis. Stat. § 134.49) imposes notice requirements on certain business contracts with renewal or extension clauses, and noncompliance can affect whether those provisions are enforceable. Employment agreements, non-competes, and independent contractor agreements are especially prone to becoming outdated as Wisconsin case law on enforceability continues to develop. A contract that was enforceable when it was signed five years ago may have gaps or unenforceable provisions today.

What happens to my business contracts if my company merges with or is acquired by another entity?

It depends on how the deal is structured. In an asset purchase, the buyer generally selects which contracts to assume and which to leave behind — but many commercial contracts contain anti-assignment clauses that require the other party’s consent before transfer. In a stock or membership interest purchase, the entity itself doesn’t change, so contracts typically survive automatically. However, some contracts include change-of-control provisions that allow the other party to terminate if ownership changes hands. Before any merger or acquisition closes, every material contract should be reviewed for assignment restrictions, change-of-control triggers, and consent requirements to avoid unintended breaches.