Overtime is priced on all remuneration, not the base wage
The regular rate is not the hourly wage printed on the schedule. It is a weighted figure that captures essentially all the remuneration an employee receives for work, reduced to an hourly equivalent — total includable pay divided by the hours it covers. The reason the distinction matters is that overtime and, after Ferra, the meal- and rest-period premium are computed on this rate, not on the base wage; so any form of compensation that belongs in the rate but is left out causes the overtime and premium to be underpaid. The base hourly wage is merely the largest input, not the whole of it. An employer that adds a shift differential, a weekend bonus, or a distributed service charge to an employee's pay has increased the employee's remuneration, and unless that addition is reflected in the rate, the overtime and premiums computed for that employee are too low.
California's framework for sorting includable from excludable remuneration largely follows the federal categories defined in 29 U.S.C. § 207(e), with important divergences this section develops — the flat-sum computation Alvarado requires, the premium rate Ferra mandates, and the absence of any tip credit. The analytic move is the same in every case: start from the presumption that remuneration is included, then test whether it fits one of the defined exclusions. The presumption is the employer's burden to overcome, not the employee's to establish, which is why a form of pay an employer has simply assumed to be outside the rate is the recurring source of exposure.
The remuneration that raises the rate
The includable categories are broad, and in a restaurant they are common. Nondiscretionary bonuses — those an employee earns by meeting announced conditions, whether for attendance, weekend work, production, or longevity — are remuneration for work and belong in the rate. Shift and weekend differentials, paid for working particular hours, are additional compensation that raises the rate for the periods in which they are earned. Commissions and piece-rate earnings are included. And, distinctively for restaurants, a mandatory service charge that is distributed to employees becomes employer-paid wages once distributed, and enters the rate — a point that turns entirely on the characterization of the charge, developed on the next page. The unifying test is whether the payment is remuneration for the employee's work; if it is, and no exclusion applies, it is in the rate.
The test for inclusion is simple to state and easy to overlook: is this payment remuneration for the employee's work? If it is, it raises the rate.
The defined categories that stay out
The exclusions are specific and narrowly construed, which is the mirror image of the broad inclusion presumption. Truly discretionary bonuses and genuine gifts are excluded — but only where both the fact and the amount of the payment rest in the employer's sole discretion, as the next section explains. Payments for occasional periods when no work is performed, such as vacation, holiday, or sick pay, and genuine reimbursements of business expenses, are excluded because they are not compensation for hours worked. Certain qualifying contributions to benefit plans are excluded. And true premium pay — the extra half- or full-time the employer has already paid for overtime, and certain holiday or seventh-day premiums — is excluded and is instead credited against overtime owed, because re-including it would double-count a premium the law already required. A customer gratuity is excluded for a different reason entirely: under section 351 it is the employee's property, not the employer's remuneration, so it never was part of the rate to begin with.
The exclusion that most often misleads is the premium-pay credit, because it operates oppositely to the others. The other exclusions keep an amount out of the numerator of the rate; the premium-pay rule keeps an already-paid overtime premium from being counted twice and allows it to offset overtime due. Conflating the two — treating includable remuneration as if it were excludable premium pay, or failing to credit premium pay correctly — produces errors in both directions, and both are visible in restaurant payroll systems that were configured without attention to the California rules.
Most "discretionary" bonuses are not
The single most consequential classification in building the rate is whether a bonus is discretionary, because that line decides inclusion, and employers routinely misjudge it — treating a bonus as discretionary, and so leaving it out of the rate, when it is not. A bonus is genuinely discretionary, and therefore excludable, only where both the fact that it will be paid and the amount are determined at the employer's sole discretion at or near the end of the period, and the bonus is not paid pursuant to any prior contract, agreement, or promise — and not in a way that leads employees to expect it (29 C.F.R. § 778.211, implementing § 207(e)(3)). That is a demanding standard. A year-end bonus that employees have come to expect, a bonus announced in advance to incentivize attendance or sales, a bonus paid by a formula, or a bonus described in a handbook is nondiscretionary, however much the employer thinks of it as a discretionary reward, because the employee's expectation or the announced condition removes it from the employer's sole discretion.
The practical consequence is that very few of the bonuses a restaurant actually pays are discretionary in the legal sense. Attendance bonuses, weekend-shift bonuses, production and sales bonuses, and retention bonuses are all nondiscretionary because they are announced, conditioned, or expected, and all must be folded into the regular rate. The label the employer uses is irrelevant; what matters is whether the employee could have anticipated the payment by satisfying a known condition. Treating a nondiscretionary bonus as discretionary is among the most common and most expensive regular-rate errors, because it omits a recurring form of pay from the rate for the entire population that receives it — and the flat-sum among those bonuses then carries the additional computation question the bonus page develops.
In the rate, or excluded
The categories resolve concrete pay types cleanly once the test is applied. Select a form of restaurant compensation to see whether it enters the regular rate, and why:
A bonus the employee earns by satisfying announced conditions — working a weekend, hitting an attendance threshold — is nondiscretionary remuneration for work and must be folded into the regular rate. Its flat-sum form changes only the computation (Alvarado), not the inclusion.
Nondiscretionary remuneration; cf. Alvarado (2018)Fig. 1. Common restaurant pay types and their treatment in the regular rate. "In the rate" items raise overtime and, after Ferra, the § 226.7 premium; "Excluded" items do not. The tip/service-charge line (02) and the flat-sum computation (03) are developed separately; this sorts inclusion, not computation.
The recurring omissions
The errors cluster in a few predictable places, and knowing them focuses the audit. The most common is the nondiscretionary bonus treated as discretionary — the weekend or attendance bonus left out of the rate because the employer thinks of it as a perk rather than earned compensation. The second is the shift or weekend differential, omitted because the payroll system treats it as a separate line item rather than as remuneration that raises the rate for the hours it covers. The third, distinctive to restaurants, is the distributed service charge treated as if it were a tip — kept out of the rate on the assumption that it is the employee's gratuity, when its mandatory, employer-imposed character may make it wages. Each of these is a systematic omission: it affects the rate for every employee who receives the pay type, on every overtime hour and every premium, for the entire period the formula was in place.
What these omissions share is that they are formula errors, not isolated mistakes, which is both why they are dangerous and why they are fixable: dangerous because the error is uniform and recurring, so it scales across the workforce and the limitations period into a substantial classwide figure; fixable because correcting the formula corrects every future computation at once, and a clean recomputation quantifies the past exposure precisely. The audit that catches these omissions is therefore the highest-leverage compliance step in the category — it is cheaper than any of the others, it forecloses the largest source of error, and, done before a notice, it builds the reasonable-steps record that caps the PAGA exposure on whatever the recomputation reveals. The service-charge and bonus questions that most often drive the omissions are developed on the next two pages.