Many employers run payroll on federal rules: time and a half after 40 hours in a week. In California that is only part of the picture, and the gap between the two systems is where a lot of unpaid overtime hides.
The daily thresholds
For non-exempt employees, California generally requires time and a half after eight hours in a workday, time and a half after 40 hours in a workweek, and double time after 12 hours in a day. The seventh consecutive day worked in a workweek carries its own premium rules.
The practical consequence: someone who works four ten-hour days and takes Friday off has worked 40 hours and is owed no weekly overtime, but is owed two hours of daily overtime on each of those four days.
Misclassification multiplies the problem
Two patterns come up repeatedly. The first is being labeled exempt when the actual job duties and salary do not meet an exemption; a title and a salary alone do not make someone exempt. The second is being treated as an independent contractor when California’s classification test says otherwise. In both cases, the unpaid overtime is not a rounding error, it is every hour over the threshold for the whole period.
Breaks are part of the same claim
Non-exempt employees are generally entitled to an uninterrupted 30-minute meal period before the end of the fifth hour, and to paid ten-minute rest periods for every four hours worked. When a compliant break is not provided, the employer owes an extra hour of pay for that day. Across a long employment, those premiums often exceed the overtime itself.
Expenses and final pay
California requires reimbursement of necessary business expenses, which routinely includes a share of personal phone and internet use and mileage. And final wages are due immediately on termination, or within 72 hours if you resign without notice. Late final pay triggers waiting time penalties of up to 30 days of wages, a penalty that frequently dwarfs the amount originally owed.
These claims are usually not individual
Wage violations tend to come from a policy rather than a one-off mistake, which means coworkers are typically owed the same thing. Where that is true, a representative or class approach is often the more effective route.