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March 4, 2026 · Benjamin J. Treger
A Practical Guide for Employers
Ask most employers what they pay their employees and they will point to an hourly number (for example, $20 per hour). But if you rely on that figure alone to calculate overtime (and other specific payments), you may be out of compliance. And the exposure can be significant: unpaid overtime claims carry liquidated damages, penalties, and attorneys’ fees that accumulate across every affected employee and every pay period.
The source of the problem is a single legal concept: the regular rate of pay. The regular rate is a defined term under both the federal Fair Labor Standards Act (“FLSA”) and California law. It represents the actual per-hour value of all compensation the employee earned during the workweek, not just the hourly rate printed in the offer letter.
The regular rate is the foundation for calculating several wage premiums, most prominently overtime. While an employer is permitted to compensate employees on an hourly, salaried, commission, piecework, or other basis, the regular rate is always expressed as an hourly rate. This hourly rate is generally determined by dividing the employee’s total remuneration (except for certain narrow statutory exclusions) in any workweek by the total hours actually worked in that workweek.
The basic formula is:
Because the numerator includes far more than just hourly wages, the regular rate is often higher than the employee’s base hourly rate. The regular rate can never be less than the applicable minimum wage, but it can (and frequently does) exceed the base rate. Moreover, depending on the employment arrangement, the regular rate may change from week to week as an employee’s total earnings fluctuate.
Understanding the regular rate requires grasping a distinction that many employers miss. The regular rate sits at the center of two separate inquiries:
1. What goes IN? Certain forms of compensation (bonuses, commissions, shift differentials, stipends, and other incentive pay) must be folded into the numerator when calculating the regular rate. These are the inputs.
2. What comes OUT? Once calculated, the regular rate becomes the basis for computing a wide range of required wage payments, not just overtime. Meal and rest period premiums, sick pay, reporting-time pay, and other obligations are all measured by reference to the regular rate. These are the outputs.
If the inputs are wrong, meaning required compensation is left out of the regular rate calculation, then every output derived from that rate will also be wrong. The error cascades across overtime, premium pay, and statutory penalties, creating compounding liability. This is one of the most common and most expensive wage-and-hour mistakes employers make.
Before computing the regular rate, you must identify which forms of compensation legally count as remuneration. The FLSA and California law take an expansive view: all remuneration for employment is included unless it falls within one of eight narrow statutory exclusions. If a payment is not squarely within an exclusion, it goes in the bucket. The following chart summarizes the key categories.
| Must Be Included (“In the Bucket”) | May Be Excluded (“Outside the Bucket”) |
|---|---|
| Non-discretionary bonuses: Production, attendance, retention, safety, and longevity bonuses. | Discretionary bonuses: Bonuses awarded solely at the employer’s discretion, with no prior promise or criteria. |
| Stipends: Housing or cost-of-living stipends not tied to actual expenses. | Expense reimbursements: Mileage, tools, and other amounts that reimburse actual expenses. |
| Shift differentials: Extra pay for nights, weekends, or undesirable shifts. | Overtime premiums already paid: The premium portion (not straight-time value) of overtime already compensated. |
| Commissions: All sales-based earnings. | Referral bonuses: Typically excluded if the employee is not in a recruiting role and participation is voluntary. |
| Compulsory service charges: The portion of mandatory gratuities distributed to employees. | True gifts: Occasional holiday gifts or bonuses with no connection to work performance. |
| Uncontrolled standby (“on-call”) pay: Payment for being available to work. | Benefit plan contributions: Irrevocable employer contributions to qualified retirement or insurance plans. |
Key takeaway: When in doubt, include the payment in the regular rate. The statutory exclusions are construed narrowly, and the burden is on the employer to prove an exclusion applies.
Now that we have identified what goes into the regular rate, it is equally important to understand what comes out of it. Many employers think of the regular rate as an overtime concept alone. In reality, the regular rate is the measuring stick for a surprisingly broad set of wage obligations. When the regular rate is wrong, the underpayment ripples across every one of the following categories.
| Payment Type | How the Regular Rate Applies |
|---|---|
| Overtime | Hours worked beyond 8 in a workday (California) or 40 in a workweek are compensated at 1.5× or 2× the regular rate. |
| Meal Period Premiums | When an employer fails to provide a compliant meal period, the employee is owed one additional hour of pay at the regular rate. |
| Rest Period Premiums | The same rule applies: one additional hour at the regular rate for each workday a compliant rest period is not provided. |
| Recovery Period Premiums | When an employer fails to provide a required cool-down recovery period, the penalty is one additional hour at the regular rate. |
| Paid Sick Leave | Under California’s Healthy Workplaces, Healthy Families Act (Lab. Code § 246), paid sick leave may be calculated using the regular rate for the workweek in which the leave is taken. |
| Reporting Time Pay | Under the California Wage Orders, an employee who reports for a scheduled shift but is sent home early is owed a minimum number of hours at the regular rate. |
| Split-Shift Premiums | When an employee works a split shift (two distinct work periods separated by more than a meal period), the employee is entitled to one additional hour at the minimum wage, or the regular rate if higher. |
| Seventh-Day Premium | Under California law, work on the seventh consecutive day of a workweek is paid at 1.5× the regular rate for the first 8 hours and 2× thereafter. |
The takeaway: the regular rate is not just an overtime concept. It is the common denominator for virtually every premium-wage obligation in California. An error in the regular rate calculation does not produce a single underpayment. Instead, it produces a cluster of underpayments across every affected pay category, each carrying its own penalty exposure. This is why getting the regular rate right is not optional; it is the single most important wage-and-hour calculation an employer performs.
The mechanics of computing the regular rate differ depending on how the employee is compensated. Below are the most common scenarios.
If an employee’s only straight-time compensation is an hourly wage, that wage is the regular rate. However, the moment the employee also receives any includable compensation (a non-discretionary bonus, a stipend, on-call pay), the regular rate rises. The calculation is simple: add the extra compensation to the employee’s hourly earnings, and divide by total hours worked in that workweek.
Example: Hourly Employee With a Bonus
An employee whose hourly rate is $20.00 works 46 hours in a workweek and earns $18.40 in non-discretionary bonus pay.
| Step 1: Hourly earnings = 46 hrs × $20.00 | = $920.00 |
| Step 2: Total remuneration = $920.00 + $18.40 | = $938.40 |
| Step 3: Regular Rate = $938.40 ÷ 46 hrs | = $20.40/hr |
Because the employee has already been paid straight time for all 46 hours within the $938.40, only the extra half-time premium is owed for the 6 overtime hours:
| Half-time premium = $20.40 × 0.5 | = $10.20 |
| Overtime owed = 6 hrs × $10.20 | = $61.20 |
| Total compensation = $938.40 + $61.20 | = $999.60 |
Note: If the employer had calculated overtime using only the $20.00 base rate, the employee would have been underpaid.
Employees often work different types of shifts within a single week, and each shift may carry its own pay rate. A common mistake is to assume that overtime should be based on whichever rate seems most logical: the highest rate, the base rate, or the rate worked during overtime hours. The law does not permit any of these shortcuts. [Note: federal law does sometimes allow for this last method, the “rate in effect” method, but numerous other conditions must be met first.]
When an employee works at multiple hourly rates, the regular rate becomes a weighted average of all pay earned across all hours worked. This is often referred to as the “blended rate.” This ensures the overtime calculation reflects the true value of the employee’s entire week of work, not just one of the rates.
Example: Multiple Rates With Bonus and Commissions
An employee works the following schedule in one workweek:
Step 1: Total Hours and Straight-Time Earnings
| Total Hours = 5 + 30 + 10 | = 45 hrs (5 hrs of overtime) |
| Travel time = 5 hrs × $16 | = $80 |
| Daytime work = 30 hrs × $20 | = $600 |
| Night work = 10 hrs × $22 | = $220 |
| Subtotal (hourly) | = $900 |
Step 2: Add Bonus and Commissions to the Bucket
| Total Remuneration = $900 + $200 + $500 | = $1,600 |
Step 3: Compute the Regular Rate
| Regular Rate = $1,600 ÷ 45 hrs | = $35.56/hr (approx.) |
Step 4: Compute the Overtime Premium
The employee has already been paid straight time for all 45 hours in the $1,600 total. Only the extra half-time premium is owed for the 5 overtime hours:
| Half-time Rate = $35.56 × 0.5 | = $17.78 |
| Overtime Premium = 5 hrs × $17.78 | = $88.89 |
Step 5: Total Lawful Compensation
| Total Pay = $1,600 + $88.89 | = $1,688.89 |
California imposes a unique rule for what it calls “flat sum bonuses.” These are fixed-amount payments that do not increase with additional hours, productivity, or effort. Examples include a $50 bonus for completing a Saturday shift, a $300 bonus for staying through the end of a season, or a $5 per-day attendance bonus.
Unlike most other forms of compensation, flat sum bonuses require a two-step overtime calculation with different divisors and multipliers for each step. For the flat sum bonus component, the employer must divide the bonus by the number of non-overtime hours worked (not total hours) and then multiply the resulting per-hour value by 1.5 (not 0.5) to determine the overtime rate on the bonus. This methodology was established by the California Supreme Court and produces a higher overtime obligation than the standard FLSA approach.
Example: Flat Sum Bonus Calculation
An employee whose hourly rate is $20.00 works 46 hours in a workweek. He earns a $1.00/hr shift differential ($46.00 total) and a $50.00 flat sum attendance bonus for completing a Saturday shift.
Step 1: Regular Rate on Hourly Pay + Differentials (Standard Method)
| Hourly earnings = 46 hrs × $20.00 | = $920.00 |
| Shift differentials = 46 hrs × $1.00 | = $46.00 |
| Regular Rate = ($920 + $46) ÷ 46 hrs | = $21.00/hr |
| Half-time premium = $21.00 × 0.5 | = $10.50 |
| OT on hourly pay = 6 hrs × $10.50 | = $63.00 |
Step 2: Regular Bonus Rate on the Flat Sum Bonus (California Method)
| Regular Bonus Rate = $50.00 ÷ 40 non-OT hrs | = $1.25/hr |
| OT rate on bonus = $1.25 × 1.5 | = $1.875/hr |
| OT on bonus = 6 hrs × $1.875 | = $11.25 |
Total Compensation
| Hourly + differentials + OT | = $966.00 + $63.00 = $1,029.00 |
| Flat sum bonus + OT on bonus | = $50.00 + $11.25 = $61.25 |
| Grand Total | = $1,029.00 + $61.25 = $1,090.25 |
The two-step process is mandatory under California law. Employers who apply the standard 0.5 multiplier to the flat sum bonus, or who divide by total hours instead of non-overtime hours, will underpay.
Employers operating in California face an additional layer of complexity: the state imposes overtime obligations on both a daily and weekly basis. Under California law, overtime is generally owed for hours worked in excess of 8 in a single workday and for hours worked in excess of 40 in a workweek. Double time is owed for hours in excess of 12 in a workday and for all hours worked beyond 8 on the seventh consecutive day of the workweek.
This dual-trigger system creates a risk of “pyramiding,” or counting the same hours twice. To prevent this, the law provides a straightforward anti-pyramiding rule: at the end of the workweek, the employer counts the total number of daily overtime hours and the total number of weekly overtime hours. The employee is paid overtime on whichever number is greater, not both.
Example: Anti-Pyramiding in Action
An employee works: Mon 9 hrs, Tue 10 hrs, Wed 6 hrs, Thu 7 hrs, Fri 9 hrs (Total: 41 hrs).
| Weekly OT = 41 − 40 | = 1 hour |
| Daily OT: (9−8) + (10−8) + (9−8) | = 1 + 2 + 1 = 4 hours |
Because 4 daily overtime hours > 1 weekly overtime hour, the employee is owed overtime for 4 hours (not 5).
When an employer calculates overtime using the base hourly rate instead of the regular rate, the underpayment on any single paycheck may appear modest. But the liability is cumulative. Multiply the per-check shortfall by every affected employee, every overtime week, and every pay period within the applicable statute of limitations (three years under the FLSA; up to four years under California law for willful violations), and the exposure becomes substantial.
Consider the weighted-average example from above. If the employer had simply applied the $20.00 base rate to the 5 overtime hours, the overtime payment would have been:
Incorrect Calculation (Base Rate Only)
| OT premium (wrong) = 5 × ($20.00 × 0.5) | = $50.00 |
| Total pay (wrong) = $1,600 + $50.00 | = $1,650.00 |
Correct Calculation (Regular Rate)
| OT premium (correct) = 5 × ($35.56 × 0.5) | = $88.89 |
| Total pay (correct) = $1,600 + $88.89 | = $1,688.89 |
Underpayment per week: $1,688.89 − $1,650.00 = $38.89
That $38.89 shortfall is for a single employee in a single week. Standing alone, it may not seem worth worrying about. But California’s penalty framework is designed to stack multiple categories of liability on top of the underlying wage deficiency. The following illustration shows how a seemingly small per-week error compounds when each layer of statutory exposure is added.
Assume the following facts, which are common in regular-rate litigation:
Layer 1: Unpaid wages. The foundation of any claim is the wage shortfall itself.
| $38.89/wk × 156 wks × 50 employees | = $303,342 |
Layer 2: Liquidated damages. Under California Labor Code § 1194.2, an employee who recovers unpaid overtime is entitled to liquidated damages equal to the unpaid wages, plus interest. This effectively doubles the back-pay exposure. Under the FLSA, liquidated damages are also available and are presumed unless the employer proves good faith (29 U.S.C. § 216(b)).
| Liquidated damages (= unpaid wages) | = $303,342 |
Layer 3: Wage statement penalties. Because the overtime rate printed on each pay stub was incorrect, every wage statement issued during the class period is a potential violation of California Labor Code § 226(a). The statute provides penalties of $50 per employee for the initial violation and $100 per employee for each subsequent violation, up to a cap of $4,000 per employee.
| 50 employees × $4,000 cap | = $200,000 |
Layer 4: Waiting time penalties. When a separated employee has not been paid all wages due at the time of termination, California Labor Code § 203 imposes a penalty of up to 30 days of daily wages per employee. Any overtime underpayment that remained uncorrected at separation triggers this exposure.
| 15 employees × 30 days × $285/day | = $128,250 |
Layer 5: PAGA civil penalties. The Private Attorneys General Act (Cal. Lab. Code § 2698 et seq.) authorizes aggrieved employees to recover civil penalties for Labor Code violations on behalf of the state. The penalty is $100 per employee per pay period for the initial violation and $200 for each subsequent violation. For a systematic payroll error, every pay period is a violation for every affected employee.
| 50 employees × 78 pay periods × $200 | = $780,000 |
(Under current law, 25% is distributed to aggrieved employees and 75% to the LWDA, but the employer bears the full amount.)
Layer 6: Interest. Prejudgment interest accrues on all unpaid wages at 7% per annum (Cal. Civ. Code § 3287) or 10% per annum (Cal. Const., art. XV, § 1) depending on the nature of the claim. Over a three-year lookback, interest alone can add 10–15% to the back-wage total.
Layer 7: Attorneys’ fees. Both California Labor Code § 1194 and the FLSA (29 U.S.C. § 216(b)) are fee-shifting statutes: a prevailing employee recovers reasonable attorneys’ fees and costs. In wage-and-hour class actions and PAGA cases, the attorneys’ fees frequently rival or exceed the underlying damages.
| Penalty Category | Estimated Exposure |
|---|---|
| Unpaid overtime wages (3 years) | $303,342 |
| Liquidated damages (§ 1194.2) | $303,342 |
| Wage statement penalties (§ 226) | $200,000 |
| Waiting time penalties (§ 203) | $128,250 |
| PAGA civil penalties (§ 2699) | $780,000 |
| Interest (est. 10–15% of wages) | $30,000–$45,000 |
| Subtotal (before attorneys’ fees) | $1.74–$1.76M |
| Attorneys’ fees and costs (est.) | $500,000+ |
The total potential exposure in this scenario approaches or exceeds $2 million, all originating from a $38.89-per-week-per-employee overtime calculation error. The math is unforgiving: a small weekly shortfall, applied across a workforce and a multi-year lookback, feeds into at least six independent penalty categories that California law makes available to a single plaintiff or class representative.
It is also worth emphasizing that these categories are not mutually exclusive. A PAGA representative action can assert every Labor Code violation in a single complaint, and individual and class claims can be brought alongside it. Courts routinely allow plaintiffs to stack these remedies, and the penalties described above reflect conservative assumptions. If the employer’s error also produced incorrect meal or rest period premium payments, sick pay underpayments, or reporting-time pay deficiencies (all of which flow from the same regular rate), each of those independent violations generates its own set of back wages, penalties, and fee exposure on top of the amounts shown above.
Audit your “bucket.” Review every form of compensation paid to nonexempt employees (bonuses, commissions, differentials, stipends, on-call pay, service charges) and confirm that each includable payment is being folded into the regular rate. Err on the side of inclusion.
Apply the correct multipliers. The standard half-time (0.5×) premium applies to most forms of includable compensation. But flat sum bonuses under California law require a 1.5× multiplier applied to a per-hour rate derived from non-overtime hours only. Mixing up these methods is a common and costly error.
Watch for multiple rates. Whenever an employee works at more than one hourly rate in a workweek, use the weighted-average method to compute the regular rate. Do not default to the base rate, the highest rate, or the rate in effect during overtime hours.
Seek legal counsel. The regular-rate rules are among the most technical and frequently litigated areas of wage-and-hour law. A proactive compliance review is far less expensive than defending a class action. If you have questions about how these rules apply to your workforce, we encourage you to reach out.
Disclaimer: This article is provided for informational purposes only and does not constitute legal advice. The application of wage-and-hour law is highly fact-specific, and the rules summarized above may vary depending on the applicable jurisdiction, industry, and Wage Order. Employers should consult qualified legal counsel before making changes to their payroll or compensation practices.