California overtime is calculated on the ‘regular rate of pay’ — not just the base hourly wage. Workers who receive bonuses, piece-rate pay, or other compensation often find their overtime has been systematically undercalculated.
What Goes Into the Regular Rate
The regular rate must include: the base hourly wage, non-discretionary bonuses (production bonuses, attendance bonuses, safety bonuses), piece-rate earnings, shift differentials, and most other forms of compensation actually paid to the worker. It excludes: truly discretionary bonuses (at the employer’s sole discretion with no prior promise), overtime premiums already paid, and a few other specific items.
A $500 monthly production bonus changes your overtime rate for the entire month. An employer who pays you $20/hour plus a $500 monthly bonus but calculates overtime at $30/hour (1.5x $20) has underpaid your overtime. The correct calculation adds the bonus to your total compensation for the month, divides by total hours to get the true regular rate, and then pays overtime at 1.5x that higher rate. The difference across a three-year lookback can be thousands of dollars.
The California Wage Theft Recovery System gives workers the exact tools and templates to document violations, calculate what they’re owed, and file the right claims — without paying an attorney to get started. Request your free evaluation here.
California Wage Theft Recovery System 
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