Enter when you started and finished work each day. See your total hours, overtime and pay for the week.
Under the federal Fair Labor Standards Act (FLSA), non-exempt employees must receive overtime pay of at least 1.5× their regular rate for all hours worked over 40 in a workweek. The FLSA workweek is any fixed 7-consecutive-day period — it doesn't have to match the calendar week. Overtime is calculated weekly, not daily — so 9 hours on Monday followed by 4 hours Friday doesn't trigger daily overtime at the federal level (though some states like California have daily overtime rules).
California has stricter rules than federal law: daily overtime (1.5×) kicks in after 8 hours in a single day, and double time (2×) applies after 12 hours in a day or after 8 hours on the 7th consecutive workday. Alaska, Nevada, and Puerto Rico also have daily overtime provisions. If you're in California, the calculator above understates your overtime entitlement — you may be owed more than shown.
Salaried employees earning above $684/week ($35,568/year) are typically "exempt" from overtime under FLSA — meaning their employer is not legally required to pay overtime regardless of hours worked. This doesn't mean all salaried workers are exempt; job duties must also meet the executive, administrative, or professional exemption tests. If your employer misclassifies you as exempt when you shouldn't be, you can file a wage claim with the Department of Labor for back pay going up to 2–3 years.