Shared Enterprise Liability and Alter Ego Liability In California Law
Shared Enterprise Liability and Alter Ego Liability In California Law
Corporate law begins with a premise that is both simple and fragile: entities are separate. That premise does a great deal of work. It allocates risk. It encourages investment. It allows complex organizations to exist without collapsing into a single point of liability. But it is a legal fiction—one the courts will preserve only so long as it continues to describe reality. The decision in a new case called Mortimer v. McCool reflects this tension. It does not reject the principle of separateness. It reexamines its limits.
At issue was a familiar problem of affiliated companies that are commonly owned and operating in concert. The question was whether liability could move laterally, across entities that were formally distinct but functionally connected.
The court considered affiliated company enterprise liability corporate veil-piercing. Typically, even in alter ego veil-piercing, liability does not move directly from one entity to another. It moves through ownership. First, the veil must be pierced between the debtor company and its owner. Only then can it extend outward, from that owner to an affiliated entity. A two-step inquiry. A triangular path. Each step requiring its own justification. It permits the possibility of affiliated-entity liability, but only where traditional principles already support it. Control must still be shown. Misuse must still be present. And the result must still be inequitable if the structure is left undisturbed.
What Mortimer notes is the idea that business coordination alone is not enough. Modern enterprises are often coordinated. Functions are divided. Risk is distributed. Entities share resources, personnel, and strategy. None of this, standing alone, is improper. The law does not punish efficiency.
But the law does, eventually, ask whether the separation is real. The courts have been asking versions of that question for decades, often under the label of alter ego, and sometimes—less consistently—under the idea of a single-business enterprise.
Alter ego looks vertically. It asks whether the boundary between owner and entity has dissolved. Enterprise liability looks horizontally. It asks whether the boundary between entities exists or was ever meaningful to begin with.
In practice, California has tended to collapse the two. Enterprise theories are often treated as variations of alter ego, rather than as a distinct analytical path. Further, in California there is a theory of hub and spoke enterprise liability, where affiliate entities (spokes around the hub) are found liable if the hub is liable. The doctrine expands and contracts depending on the facts, without always explaining why. The Mortimer case offers a different approach. Not broader, but more structured. It separates the inquiries. It insists on sequence. And in doing so, it reinforces something that is easy to overlook: that disregarding corporate form is not a matter of convenience. It is a matter of justification.
For California, the Mortimer decision is not binding and in fact, Epps & Coulson, LLP has used the enterprise liability and alter ego theories in judgment collection. But the Mortimer decision is instructive. It suggests that the question is not simply whether affiliated entities operate together. They often do. The question is whether the law has a principled way to decide when that cooperation becomes a basis for shared liability. That is where doctrine matters. Because in the end, corporate law is not deciding whether entities are separate in theory. It is deciding whether they are separate enough in fact to deserve the protection that theory provides. And when they are not, the law does not abandon the idea of separateness. It recalibrates it.
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Dawn – dawn@eppscoulson.com.
EPPS & COULSON, LLP
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