A commissioned sales rep walks in owed forty thousand dollars in back commissions, and the first thing you ask for is the written agreement. Half the time there isn't one. The employer paid on a spreadsheet, changed the rate twice by email, and fired the rep the week a large deal closed. Most plaintiff attorneys treat the missing writing as a proof problem. It is closer to the opposite: the employer's failure to produce a compliant agreement is the employer's violation, not yours, and California law has said since 2013 that the writing was mandatory.
Labor Code section 2751 requires that when an employer and an employee contract for services in California and the method of payment involves commissions, the contract must be in writing, must set forth the method by which the commissions are computed and paid, and must be delivered to the employee against a signed receipt. The statute is short and its command is plain. What it conspicuously lacks is a remedy. There is no per-violation penalty written into 2751 itself. That absence is why the posture of a missing-or-defective-agreement case is different from a wage-statement case, and why the plaintiff who understands the difference does better.
What Section 2751 Actually Commands
The current version of 2751 traces to AB 1396, effective January 1, 2013. Before that amendment, the writing requirement applied only to out-of-state employers with California employees. The 2011 amendment made it general: any employer, in-state or out, paying commissions for services rendered in California must reduce the commission arrangement to a signed writing that explains how commissions are calculated. If the employment continues past the contract's expiration and the parties keep operating under the old terms, the statute treats those terms as remaining in force until superseded or the employment ends.
Two things fall outside the statute. First, the definition of "commission" is not elastic. Under Ramirez v. Yosemite Water Co. (1999) 20 Cal.4th 785, commissions are compensation paid to a person for services rendered in the sale of the employer's property or services, tied to the amount or value of that sale. Section 2751 borrows that meaning and excludes short-term productivity bonuses, bonus and profit-sharing plans (unless the employer has offered to pay a fixed percentage of sales or profits as compensation), and temporary variable incentive payments that increase but do not decrease payment. If your client's "commission" is really a discretionary bonus, 2751 does not reach it, and you should know that before you plead it. Second, the statute governs the form of the agreement; it does not by its terms create a damages remedy for the failure to have one.
The Remedy Gap and How Plaintiffs Fill It
Because 2751 carries no penalty clause, the value of a missing agreement is evidentiary and interpretive, not a standalone recovery. Three moves matter.
First, earned commissions are wages. Once a commission is earned under whatever terms governed the relationship, it is a wage subject to the full protection of the Labor Code, and the employer cannot claw it back or condition it away after the fact. Sciborski v. Pacific Bell Directory (2012) 205 Cal.App.4th 1152 is the workhorse here: an employer may set the conditions under which a commission is earned, but once those conditions are satisfied the commission belongs to the employee and a later chargeback that is not tied to the sale itself is an unlawful deduction under sections 221 through 223. When there is no written agreement fixing the earning conditions, the employer has surrendered its best tool for arguing the commission was never earned.
Second, ambiguity runs against the drafter. Where an agreement exists but is silent or muddy on the decisive term — usually when the commission vests, and whether it survives termination — California construes the ambiguity against the employer who wrote it and controlled the process. A missing writing is the extreme case of ambiguity: the employer cannot point to language it never committed to paper. Course of dealing, prior payments on similar deals, and the employer's own email statements become the terms, and those almost always favor the rep who actually closed the sale.
Third, the derivative claims do the enforcement work. Unpaid earned commissions support waiting-time penalties under section 203 when the employee is terminated, and they distort every wage statement the employer issued, which opens section 226. We have written before about how wage statement defects under Labor Code 226 stack into PAGA exposure, and a commission case is a clean vehicle for it: if the commissions were wages and they were underpaid, the itemized statements were inaccurate as a matter of arithmetic. That converts a contract-flavored dispute into a Labor Code penalty case with attorney's fees.
When the Agreement Exists but Is Defective
Defective is more common than absent. The employer has a document, but it fails 2751 in a specific way: it never explains the computation method, it was never signed by the employee, no signed receipt was obtained, or a later rate change was never papered. Each defect is worth isolating in discovery.
A document that recites a percentage but does not state how the base is calculated — gross versus net, before or after returns, whether house accounts count — has not "set forth the method by which the commissions are computed" within the meaning of the statute. Treat that as a partial failure and argue that the undefined terms are construed in the employee's favor. Where the employer changed the commission structure mid-employment without a new signed writing, the prior signed terms are the operative ones under the statute's continuation rule, which frequently means the more generous original schedule governs the disputed deals.
Building the Record Early
Request the signed agreement, the signed receipt, every version of the commission plan, and all communications changing rates or accounts. The receipt requirement is easy to overlook and the employer often cannot produce it. Get the payment history in native format so you can reconstruct the actual computation the employer used, which is your best evidence of the real terms when the writing is silent. Pin the termination date precisely, because the section 203 clock and the analogous timing questions we covered in the piece on the five-year clock that killed a UM arbitration are a reminder that limitations and accrual arguments decide commission cases as often as the merits do.
Pleading and Valuation
Plead the commission recovery as unpaid wages, not merely breach of contract, so the Labor Code remedies attach. A common structure is a cause of action for unpaid wages under sections 200 through 204, a section 203 claim for the terminated employee, a section 226 claim for the inaccurate statements, and where the facts support it, a PAGA count. The 2751 violation itself is pleaded as context and as the reason the employer cannot enforce restrictive earning conditions, not as a freestanding damages theory.
On valuation, resist the instinct to reach for fraud or punitive exposure on a thin record. Withholding a disputed commission, without more, is a contract-and-wage dispute; it is not the malice, oppression, or fraud that section 3294 requires, and our discussion of punitive damages after Roby explains how quickly courts strip a punitive claim that rests on nonpayment alone. The real money in these cases is the combination of the earned commissions, the section 203 penalty at up to thirty days of wages, section 226 penalties, and fees — not a speculative punitive multiplier that invites a demurrer.
The Defense Playbook, and How to Blunt It
Expect three defenses. The employer will argue the payment was a discretionary bonus outside 2751, so anchor the "commission" definition to Ramirez and the sales-tied structure of the actual payments. The employer will argue the commission was never earned because a condition failed, so meet it with Sciborski and the point that an employer with no compliant writing cannot manufacture earning conditions after the fact. And the employer will argue the terms were whatever the last email said, so use the statute's continuation rule to hold it to the last signed writing. In each instance the missing or defective agreement is a burden the employer created and now has to carry.
The lesson of a 2751 case is counterintuitive: the statute's silence on remedy is not a weakness in the client's hand but a feature of the employer's exposure. The writing was mandatory, the employer skipped it, and the earned commissions are wages regardless. Work the derivative Labor Code claims, hold the employer to the last signed terms, and let the absence of the document do the arguing it was supposed to prevent.