At what rate is the premium paid?
When an employer fails to provide a compliant meal or rest period, section 226.7 requires it to pay the employee one additional hour of pay for that day. The question this page answers is the rate at which that hour is paid — and for years it had two plausible answers. The overtime statute, section 510, speaks of the "regular rate of pay," a term long understood to include all nondiscretionary remuneration. Section 226.7 uses a different phrase: "regular rate of compensation." Because the words differed, many employers and several courts concluded that the premium could be paid at the employee's base hourly rate alone, excluding the bonuses, differentials, and other nondiscretionary pay that the overtime rate includes. That reading made the premium cheaper than overtime and treated the statutory difference in wording as a difference in meaning.
The stakes of the question were larger than they appeared, because the answer determines whether a single regular-rate error stays confined to overtime or spreads to premiums as well. If the premium used the base rate, then an employer that omitted a bonus from the overtime rate had one problem; if the premium used the full regular rate, the same omission understated the premium too, and the rate error's reach doubled. Ferra resolved the question, and it resolved it in the direction that maximizes the reach.
The premium is paid at the overtime regular rate
In Ferra v. Loews Hollywood Hotel, a bartender who received nondiscretionary quarterly incentive pay alleged that her employer underpaid her meal- and rest-period premiums by computing them on her base hourly rate alone, excluding the incentive pay. The trial court and the Court of Appeal sided with the employer, holding that "regular rate of compensation" meant the base rate. The California Supreme Court reversed, holding that "regular rate of compensation" in section 226.7(c) is synonymous with "regular rate of pay" in section 510(a). The premium, in other words, is paid at the same rate as overtime — the rate that includes all nondiscretionary remuneration, not the base hourly wage. The difference in statutory wording, the Court concluded, did not signal a difference in meaning; both phrases refer to the same regular rate.
Two features of the decision define its impact. First, it eliminated the cheaper premium: an employer can no longer pay meal- and rest-period premiums at the base rate when the employee also receives bonuses, differentials, or other nondiscretionary pay, because those forms of compensation must be folded into the premium exactly as they are folded into overtime. Second, Ferra applies retroactively, so the base-rate premiums an employer paid before the decision were underpaid under the rule as it has always been understood to be — removing the argument that the employer reasonably relied on the wording difference. The premium and the overtime rate are now a single figure, computed once and applied to both.
One rate, two uses. After Ferra, the number that prices overtime also prices the premium — so an error in it is never a single error.
Why a rate error counts twice
The structural consequence of Ferra is that a regular-rate error produces two distinct underpayments from a single cause. Consider an employer that omits a nondiscretionary shift differential from the rate. On the overtime side, every overtime hour is underpaid by one and one-half times the per-hour value of the omitted differential. On the premium side, every meal- or rest-period premium is underpaid by the full per-hour value of the same omitted differential, because the premium is one hour of pay at the regular rate. The same omission, the same employees, the same period — but two separate shortfalls, one in the overtime line and one in the premium line, each accruing independently. The rate error is not added once to the exposure; it is added twice, through two different payment obligations that happen to share the same rate.
This doubling is what makes the regular rate the foundational category rather than merely the overtime category. An employer auditing its overtime exposure that fails to recognize the premium dimension will understate its own exposure by roughly the premium share, and an employer that corrects only its overtime rate while leaving its premium rate at the base figure will have fixed half the problem and left the other half running. The premium understatement is often substantial in restaurants, where meal- and rest-period premiums are common and the regular rate is frequently inflated above the base wage by tip-pool distributions, service charges, differentials, and bonuses — so the gap between the base rate and the true regular rate, applied to a large volume of premiums, is a meaningful figure on its own.
One rate gap, two underpayments
The calculator takes the rate the employer used and the correct regular rate, and shows the resulting shortfall in both the overtime and the premium line — the two underpayments a single rate gap produces. Enter the figures for one employee in one period; the gap, applied across the workforce and the limitations period, is the classwide exposure.
Fig. 1. Illustrative. Ferra v. Loews Hollywood Hotel (2021) 11 Cal.5th 858; Lab. Code §§ 226.7(c), 510. The two shortfalls arise from one rate gap because the premium and overtime share the regular rate. Daily overtime and double-time are not modeled; figures are hypothetical.
Reconcile the premium rate to the overtime rate
The unification Ferra effected has a constructive side: because the premium and the overtime share a single rate, a single correction fixes both. An employer that corrects its regular rate — folding in the omitted bonus, differential, or service-charge distribution — and applies that corrected rate to both its overtime and its premiums has remediated the entire dual understatement at once, rather than chasing two separate fixes. The operational discipline is to reconcile the premium rate to the overtime rate as a matter of routine, confirming that the same figure drives both computations, so that any future change to the rate inputs flows automatically to both lines. The error to guard against is the asymmetric system: one that computes overtime on the full regular rate but pays premiums on the base rate, a configuration that was defensible before Ferra and is now simply a premium underpayment.
The reconciliation also defines the audit. A regular-rate audit that examines only the overtime computation is incomplete after Ferra; it must also confirm that the premium is paid on the same rate, because an employer can be compliant on overtime and noncompliant on premiums through the very same rate inputs. Pairing the inclusion audit from the components page with a premium-rate reconciliation produces a complete picture — the right inputs, applied to both uses of the rate — and a corrected rate that is carried to both lines forecloses the dual understatement going forward. Because both the overtime and premium understatements are unpaid wages, the good-faith defense developed on the next page bears on the penalties built on them, not on the wages themselves; the wages are owed, and the fix is to compute them on the correct, reconciled rate.