Whether you're classified as "exempt" or "non-exempt" under federal labor law determines one very concrete thing: whether your employer is legally required to pay you extra for working more than 40 hours in a week. * Non-exempt employees are covered by the Fair Labor Standards Act's overtime protections. Work more than 40 hours in a single workweek, and your employer has to pay you at least one and a half times your regular hourly rate for every hour beyond that 40-hour threshold — this isn't optional or up to employer discretion, it's a legal floor. * Exempt employees fall outside those overtime protections entirely, meaning they can work well beyond 40 hours in a week without any legal entitlement to extra pay for it. But "exempt" isn't a label an employer can just assign — it requires meeting all three parts of a specific federal test simultaneously: being paid on a salary basis (a predetermined, fixed amount regardless of hours worked or output), meeting a minimum salary level threshold set by federal regulation, and actually performing job duties that qualify as executive, administrative, or professional in nature. * That three-part requirement matters because it's an all-or-nothing test — a high salary alone doesn't make someone exempt if their actual day-to-day duties don't meet the executive, administrative, or professional standard, regardless of their job title. Misclassifying a non-exempt employee as exempt to avoid paying overtime is a common source of wage-and-hour lawsuits precisely because job titles alone don't determine the correct classification. * Non-exempt employees are also guaranteed the federal minimum wage floor, currently $7.25 an hour, in addition to overtime protections — both pieces of FLSA coverage exempt employees don't have.