Time-and-a-Half Overtime Calculator

In 2026, a payroll manager at a 1,200-FTE manufacturing plant in Tennessee processes weekly time cards where about 30% of the production-line workforce books 5-15 hours of overtime per week. The arithmetic — 40 base hours at the regular rate, anything past 40 at 1.5× — is the single most-litigated wage calculation in US labor law, with millions of DOL Wage and Hour Division enforcement dollars annually. This calculator surfaces that calculation with the 40-hour FLSA threshold drawn explicitly.

The Fair Labor Standards Act of 1938 (29 USC § 201 et seq.) was the signature labor legislation of FDR's second term. Drafted by Frances Perkins (Labor Secretary 1933-1945, the first female cabinet member), the Act established the federal minimum wage ($0.25/hr), the 40-hour workweek, child labor protections, and equal-pay provisions. President Roosevelt signed it on June 25, 1938 — the same day Congress adjourned for summer recess. FLSA survived a constitutional challenge in United States v. Darby Lumber (1941) where the Supreme Court upheld federal power to regulate workplace conditions.

The time-and-a-half premium was a compromise. Labor wanted a 30-hour week (a position championed by Senator Hugo Black of Alabama before his Supreme Court appointment). Business wanted no overtime mandate. The 40 + 1.5× formula was chosen to discourage employers from working their existing workforce longer (vs. hiring additional workers during the Great Depression). Economic studies since (Hamermesh 1996, Costa 2000) found modest but real employment-spreading effects from the 1.5× premium.

The exempt vs non-exempt distinction has consumed enormous DOL bandwidth since the 1940s. The original "white collar" exemptions (executive, administrative, professional) required both a salary basis AND specific duties — the "duties test". The salary threshold has been raised six times: $200/month (1938), $30/wk (1949), $80/wk (1958), $155/wk (1975), $250/wk (1981 — frozen for 23 years), $455/wk (2004), $684/wk (2019), and the contentious $1,128/wk threshold effective January 2025 under DOL Final Rule — partially vacated by Texas federal court in November 2024.

State laws complicate the picture significantly. California Labor Code § 510 mandates daily overtime (over 8 hr/day), seventh-day-of-the-week premium, and double-time after 12 hr/day. Alaska, Nevada, Colorado, and Oregon have partial daily-OT rules. New York and Connecticut maintain their own exempt thresholds higher than federal. Most union contracts (UAW automotive, IBEW electrical, Teamsters trucking) layer additional OT triggers — Sunday premium, holiday double-time, shift differential — on top of FLSA.

The 2024 DOL Final Rule was the most aggressive OT change in 25 years. The threshold jumped from $35,568 (2019) to $43,888 (July 2024) to $58,656 (January 2025) — making an estimated 4 million additional workers eligible for overtime. The State of Texas and a business coalition sued; Judge Sean Jordan of the Eastern District of Texas vacated the January 2025 increase in Texas v. DOL (November 15, 2024). As of 2026, the appellate process is ongoing — employers face uncertainty about whether to comply with the rule or the prior $684/wk floor.

DOL Wage and Hour Division enforcement collected $213 million in back wages in fiscal 2024 across 22,000 investigations, with overtime violations being the #1 finding by a wide margin. The top three industries by recovered back wages: food service (32%), construction (18%), and retail (14%). Misclassification of independent contractors (1099 vs W-2) is the #2 violation category — employers often try to avoid OT by 1099- ing workers, but the DOL economic-reality test (six factors per 29 CFR § 795) usually rejects this for ongoing relationships.