Federal law sets overtime at 1.5× your regular rate for hours over 40 in a week. The catch is the 'regular rate' — it includes nondiscretionary bonuses and shift differentials, not just base pay.
Some states add daily overtime (California pays 1.5× over 8 hours/day and 2× over 12), so the same hours can pay differently by state.
Salaried workers can still be owed overtime unless they meet a specific exemption test — job title alone does not make someone exempt.
Try it: StateWage on overtime pay calculated.