Startups hand out titles freely — CEO, COO, Chief Revenue Officer, President of This and That. But underneath the business cards, California law has actual requirements: specific offices every corporation must fill, rules about who may hold them, and statutory presumptions about whose signature binds the company. Getting the officer structure wrong rarely hurts until the moment it does — a contract challenged, a bank refusing to honor a resolution, a filing rejected. Here is what the Corporations Code actually requires.
The three offices every California corporation must fill
Corporations Code § 312(a) requires every California corporation to have: a chairperson of the board or a president (or both); a secretary; and a chief financial officer. The bylaws or the board may add whatever other officers the company wants — vice presidents, a treasurer, assistant secretaries — but those three functions are mandatory. Two default rules fill common gaps: unless the articles or bylaws provide otherwise, the president (or, if there is no president, the chairperson of the board) is the general manager and chief executive officer of the corporation, and unless otherwise specified, "treasurer" is synonymous with chief financial officer.
Note what the statute does not require: a "CEO" title. CEO is a business convention; the statutory offices are president, secretary, and CFO. Most bylaws bridge the gap by naming the CEO as president or expressly allocating the president's statutory role to the CEO.
Can one person hold every office?
Yes. Section 312(a) states that any number of offices may be held by the same person unless the articles or bylaws provide otherwise. A single-shareholder California corporation can lawfully have one individual serve as sole director, president, secretary, and CFO. That is common and perfectly valid — but it puts extra weight on formalities. When one person wears every hat, clean board consents, minutes, and properly papered decisions are what demonstrate the corporation is real and separate from its owner. Officers are chosen by the board (or as the bylaws prescribe), serve at the board's pleasure absent an employment contract, and under § 312(b) may generally be removed by the board at any time, with or without cause — though removal does not erase rights under a valid employment agreement.
Who signs for the corporation — and the two-signature rule
Any officer with actual or apparent authority can bind the corporation. But Corporations Code § 313 creates a powerful safe harbor for the other side of the deal: a written instrument is not invalidated as to a third party who took it in good faith and without actual knowledge that the signers lacked authority, if it is signed by (1) the chairperson of the board, the president, or any vice president, and (2) the secretary, any assistant secretary, the CFO, or any assistant treasurer. Signatures in both capacities, one from each category, protect the counterparty even if the board never approved the deal.
The practical consequences run in both directions:
- When your company signs — a single officer's signature can still bind the corporation under ordinary agency principles, but counterparties on significant deals often insist on the § 313 combination or a certified board resolution. Build that into your closing checklists.
- When you take a contract from a corporation — collecting signatures in the § 313 pattern (for example, president plus secretary) sharply reduces the risk of a later "our officer was never authorized" defense.
- One person, two offices — where the same individual holds offices in both categories, the § 313 protection can apply if the individual signs in both capacities. The signature block should clearly identify both titles.
What each required officer actually does
Bylaws define the duties, but the conventional allocation tracks the titles. The president exercises general supervision over the business and typically signs major contracts and stock certificates. The secretary keeps the minutes, maintains the corporate records and stock ledger, gives required notices of meetings, and certifies resolutions — the signature banks and escrow officers ask for. The CFO keeps adequate and correct books, has custody of corporate funds, and renders accounts to the board. All officers, like directors, owe the corporation fiduciary duties of care and loyalty in exercising their functions, and officers of California corporations can face personal exposure for certain unpaid obligations they control, such as trust-fund payroll taxes.
Cleaning up a casual officer structure
Many companies discover at diligence — or in litigation — that their officers were never actually appointed, that the "CFO" listed on the Statement of Information left two years ago, or that contracts were signed by someone with a marketing title and no corporate office. The fixes are straightforward when done proactively: adopt board resolutions appointing each officer by statutory title, conform the bylaws to how the company actually operates, ratify past acts where appropriate, and update the Statement of Information, which requires disclosure of the CEO, secretary, and CFO. Our corporate governance practice regularly builds and repairs officer structures, and our business contracts practice can align your signature blocks and authority documentation so every deal is signed by someone who can actually bind the company.
Talk to a California business attorney
If you are not certain your officers were properly appointed — or whose signature your next contract actually needs — a short governance review can settle it. Schedule a free consultation or call (949) 418-2113.
This article is attorney advertising and provides general information only. It is not legal advice and does not create an attorney–client relationship. The law changes, and this article reflects the law as of its publication date. Every situation is different — contact us to discuss how the law applies to your exact circumstances. See our full disclaimer.
