You find it by accident. A vendor mentions a company you have never heard of, and a week of digging shows that your co-owner has been routing the business’s best work through a second entity he owns alone. Or the bank statements show payments to a relative for work no one did. You are furious, and you are ready to sue. Then your lawyer asks a question that changes everything. Is this your claim, or the company’s?
That question is not a technicality. In Illinois, getting it wrong can end a meritorious case before it is heard. Some wrongs done inside a company belong to you personally to sue over. Others belong to the company itself, and you may pursue them only derivatively, by stepping into the company’s shoes after clearing a set of procedural gates. Knowing the difference is the difference between recovering and being dismissed.