How California daily overtime works

Last reviewed: 2026-10-02. Confirm figures against official IRS / DIR sources before filing or paying.

Related calculator: CA overtime calculator

California is famous among payroll folks for a reason: overtime is not only a weekly concept. For many nonexempt employees on a standard schedule, hours worked beyond eight in a workday already trigger premium pay—even if the employee will not reach 40 hours for the week. That daily rule sits in Labor Code §510 and is summarized in the DIR’s overtime FAQ.

This article explains the default §510 structure, shows numeric worked examples (straight time, overtime at 1.5×, double time at 2×), and flags major scope limits so you do not treat a simple calculator as a full compliance engine.

The default §510 rules (standard nonexempt schedule)

Under Labor Code §510(a), in plain educational terms for a typical nonexempt employee:

• 1.5× the regular rate for hours worked over 8 in a workday (through 12), for hours over 40 in a workweek, and for the first 8 hours on the seventh consecutive day of work in a workweek
• 2× the regular rate for hours over 12 in a workday, and for hours over 8 on that seventh day
• The statute also states that nothing in the section requires an employer to combine more than one overtime premium rate on the same hour of overtime work (do not stack multiple OT premiums on the same hour)

The DIR Overtime FAQ restates the same structure: time-and-a-half for hours beyond eight up to and including twelve in a workday and for the first eight on the seventh consecutive day; double time beyond twelve in a day and beyond eight on the seventh day.

Workday and workweek matter

A workday is a fixed 24-hour period the employer establishes (it need not be midnight to midnight, but it must be consistent). A workweek is a fixed recurring 168-hour period. Overtime follows those employer-defined periods, not “Monday through Sunday” by cultural habit unless that is actually the defined workweek. DIR materials on workday/workweek (including DLSE explanations tied to Labor Code §§500 and 510) emphasize consistency: once set, the boundaries are not casually moved to dodge premiums.

Hours actually worked

Premiums generally track hours worked. Paid time off when no work is performed (for example, a holiday paid but not worked, or a sick day not worked) typically does not count as hours worked toward overtime thresholds. The DIR FAQ walks a similar example: eight-hour days Monday–Thursday and Saturday with Friday out sick can total 40 hours worked—without daily OT if no day exceeded eight—even if “48 hours” appear on a naive pay story that mixed in non-worked pay.

What “regular rate” means (short version)

Overtime multipliers apply to the employee’s regular rate of pay, which is not always identical to the bare hourly wage when shift differentials, nondiscretionary bonuses, commissions, or multiple rates appear. The DIR FAQ explains regular-rate themes and common inclusions/exclusions. This article’s examples use a simple hourly regular rate so the daily/weekly mechanics stay readable. If your fact pattern includes bonuses or multiple rates, use a fuller regular-rate analysis before trusting any estimate.

Important exclusions (read before you multiply)

The MileagePayTools CA overtime calculator and this guide assume standard nonexempt §510 math. They do not model:

• Alternative workweek schedules under Labor Code §511 (and related Wage Order election rules)
• Collective bargaining overtime arrangements under rules such as §514 themes
• Exempt employees (executive, administrative, professional, and other exemptions—status is a legal test, not a job-title vibe)
• Tip credits (California’s tip rules differ from many states; do not import federal tip-credit intuition blindly)
• Piece-rate pay systems and their separate wage-statement / rest-period pay overlays
• Agriculture-specific overtime phase-ins and other industry special regimes
• Every IWC Wage Order nuance

If any exclusion might apply, treat calculator output as a conversation starter—not a payroll instruction.

Worked example 1 — Long single day (daily OT + double time)

Facts: Nonexempt employee, regular rate $20.00/hour. Works 13 hours in one workday. No other complications; ignore weekly OT for this single-day illustration.

Split the day under §510 defaults:

Check without stacking: Hour 13 is paid at 2×, not at 1.5× plus an extra 2× on top of the same hour. Hours 9–12 are 1.5× only.

Contrast with a pure federal-style mental model that only watches 40 hours/week: this day already contains premium pay under California daily rules even if it is the employee’s first day of the workweek.

Try the same inputs in the CA overtime calculator.

Worked example 2 — Five 9-hour days (daily OT without weekly OT?)

Facts: Regular rate $24.00/hour. Workweek pattern: 9 hours each day Monday–Friday. Defined workweek Monday–Sunday. No seventh day. No day over 12.

Per day:

• 8 hours straight at $24 = $192
• 1 hour OT at 1.5 × $24 = $36
• Day subtotal = $228
• Five days = $1,140

Hours: 5 × 9 = 45 hours worked.

Weekly OT interaction (educational): California still requires overtime for hours over 40 in the workweek, but you do not stack an extra weekly premium on hours that already received daily overtime premium for the same hour. In a simple pattern of five 9-hour days, the five ninth hours are the overtime hours; a correct payroll engine pays those hours at 1.5× once, not 1.5× daily plus another 1.5× weekly on the same hour.

Straight-time-only naive total (wrong for CA): 45 × $24 = $1,080. Correct simple total here: $1,140. Difference: $60 (five hours of half-time premium: 5 × $12).

This is why “we only pay weekly OT like federal” is not a safe California default for nonexempt standard schedules.

Worked example 3 — Seventh consecutive day

Facts: Regular rate $22.00/hour. Defined workweek Monday–Sunday. Employee works seven consecutive days:

• Monday–Saturday: 8 hours each day
• Sunday (7th consecutive day worked): 10 hours

Step A — Monday through Friday (days 1–5): Each day is exactly 8 hours → straight time only. 5 × 8 × $22 = $880 for 40 hours.

Step B — Saturday (day 6): Still exactly 8 hours in the workday → no daily OT band on Saturday itself. But Saturday’s 8 hours are hours 41–48 of the workweek, so they require weekly overtime at 1.5× under §510: 8 × (1.5 × $22) = 8 × $33 = $264.

Step C — Sunday (7th consecutive day worked):

Week total (illustrative): $880 + $264 + $352 = $1,496 for 58 hours.

Anti-stacking check: Saturday’s hours are paid at 1.5× once (weekly OT). Sunday’s first 8 are paid at 1.5× under the seventh-day rule; the 9th and 10th Sunday hours are 2×. You do not layer an extra weekly premium on top of those same Sunday hours to invent a higher multiplier.

Compared with a naive all-straight-time story (58 × $22 = $1,276), premiums in this illustration add $220.

Important nuance: Seventh-day overtime under §510 is about the seventh consecutive day of work in the workweek, not “any Sunday.” If the employee did not work seven consecutive days in that workweek, the seventh-day premiums do not automatically attach to a weekend day.

How to think about a full week (procedure)

A practical order of operations for standard §510 estimates:

1. Confirm nonexempt status is the right assumption (this guide does not classify roles).
2. Confirm no alternative workweek / CBA / Wage Order special rule applies.
3. Break each workday into hours 1–8, 9–12, and 13+.
4. Flag whether a day is the seventh consecutive worked day in the workweek.
5. Apply 1.5× / 2× bands per the statute.
6. Review the workweek total so hours beyond 40 are premium-paid as required, without stacking multiple premiums on the same hour.
7. Multiply by the correct regular rate (simple hourly in our examples).

The on-site calculator follows this spirit for calculator inputs: hourly regular rate, hours per day, optional seventh-day flag.

Common mistakes

1. Paying only weekly OT (federal mental model) and ignoring daily OT after 8.
2. Stacking daily and weekly premiums on the same hour into a 2.25× or similar invented hybrid.
3. Counting non-worked paid hours toward the 40-hour OT threshold.
4. Assuming a salary automatically means no overtime—exemption is a test, not a paycheck format.
5. Treating every seventh calendar day as seventh-day OT without consecutive workdays in the workweek.
6. Using a calculator built for another state on California shifts.
7. Ignoring regular-rate add-ins (certain bonuses/commissions) when the fact pattern requires them.

Related topics on MileagePayTools

Employees who drive as part of the job sometimes confuse mileage reimbursement with hours worked. Miles can matter for expense reimbursement under employer policy or IRS optional rates; hours matter for overtime. Keep the topics separate:

• IRS 2026 mileage rates — two periods
• Business vs medical vs charity mileage
• Mileage log that survives questions
• Calculators: CA overtime, mileage 2026, 1099 vs W-2 educational, sales tax

Future guides on this site may cover double-time edge cases and common CA OT mistakes in more depth; this article stays on the §510 daily/weekly backbone.

Official sources

• DIR DLSE — Overtime FAQ
• California Labor Code §510 (LegInfo)
• Related reading: DIR materials on workday/workweek definitions and overtime exceptions / alternative schedules when §511 themes apply

FAQ

Does California require overtime after 8 hours even if I only work four days?

If you are nonexempt under the standard §510 rules and you work more than eight hours in a workday, daily overtime premiums apply to the excess hours even if your weekly total stays under 40—unless a valid alternative workweek or other exception applies. Four 10-hour days, for example, are not automatically straight time under default §510; that pattern is exactly what lawful alternative workweek elections are designed to address when properly adopted.

Can my employer discipline me for working unauthorized overtime?

The DIR FAQ states employers must pay for overtime that is suffered or permitted, even if unauthorized, while employers may still have internal discipline policies for violating authorization rules. Payment and discipline are different questions.

Do meal and rest breaks change the OT multipliers?

Meal/rest rules are related wage-and-hour topics with their own remedies; they do not replace §510’s 1.5× / 2× structure. This article does not deep-dive Wage Order break premium pay.

What if I work two jobs for the same employer at different rates?

Regular-rate calculations may use a weighted-average approach for the workweek (see DIR FAQ examples). Our simple calculator may not capture every multi-rate case—use caution.

Is the calculator’s result my exact paycheck?

No. It is an educational estimate under stated assumptions. Taxes, deductions, regular-rate subtleties, and exceptions can change net and even gross premium pay.

Bottom line

California Labor Code §510 makes daily overtime a default feature for many nonexempt employees: 1.5× after 8 hours in a workday (through 12), 2× after 12, plus seventh-day premiums, alongside weekly overtime over 40—without stacking multiple premiums on the same hour. Work the bands with real hour counts, confirm you are in the standard §510 world rather than an excluded regime, and verify against the DIR FAQ and statute. Use the CA overtime calculator for quick arithmetic checks, then let payroll counsel or a qualified professional handle edge cases.