Is overtime required if full-time hours exceed 40 hours?

As a full-time employee working under standard employment arrangements in the United States, with compensation governed by the Fair Labor Standards Act (FLSA), if my designated weekly schedule—typically defined as Monday through Friday—exceeds 40 hours due to increased workload, extended shifts, or mandatory attendance at company events outside regular hours—such as required training sessions or mandatory overtime days—am I legally entitled to receive overtime pay at a rate of at least one and one-half times my regular hourly wage for each hour worked beyond the 40-hour threshold, and are employers obligated to provide this compensation regardless of whether such hours were formally approved in advance? This question specifically addresses hours worked within a single workweek and excludes scenarios involving alternate workweek agreements or exempt salaried positions.

Under the Fair Labor Standards Act (FLSA) in the United States, overtime pay is required for non-exempt employees if they work more than 40 hours in a single workweek. Overtime pay must be at least one and a half times the employee’s regular rate of pay. Key details include:

1. Non-Exempt Employees: Only non-exempt employees (such as hourly workers, non-managerial staff, and certain salaried employees below the salary threshold) are entitled to overtime under the FLSA. Exempt employees (e.g., certain executives, professionals, or administrators) are not covered.
2. Workweek Definition: A workweek is a fixed, recurring 168-hour period (7 consecutive 24-hour days). It need not align with a calendar week but must consistently apply across the organization.
3. 40-Hour Threshold: Overtime applies only after 40 hours are worked within the defined workweek. For example, an employee working 45 hours in one week and 35 in the next must be paid overtime only for the 5 hours exceeding 40 in the first week.
4. State Variations: Some states (e.g., California, New York) have stricter overtime rules, such as requiring overtime for hours worked over 8 in a day or double time for hours beyond 12 in a day. State laws may apply if they provide greater protection than the FLSA.
5. Calculating Overtime: Overtime is based on the total hours worked in the workweek, not per day. Irregular hours (e.g., 10 hours one day and 6 the next) do not trigger overtime until the weekly total exceeds 40.
6. Employer Policies: Employers cannot waive overtime requirements via contract or agreement. Employees must be paid for all overtime hours worked.
7. Recordkeeping: Employers must maintain records of hours worked and overtime paid for at least three years.

In summary, overtime is required for non-exempt employees working over 40 hours in a workweek under federal law, but state laws may impose additional obligations.