Official Sources & References
Every calculator formula, rule, and piece of information on TimeAndHalfCalc.com comes from official U.S. government sources. Here's exactly where we get our data — so you can verify anything independently.
Our commitment to accuracy: All overtime rules, wage rates, exemption thresholds, and FLSA regulations on this site are sourced directly from the U.S. Department of Labor, official state labor departments, and federal legal codes. We do not cite secondary sources when a primary government source is available. Sources are reviewed quarterly and updated when regulations change.
U.S. Department of Labor — Wage and Hour Division (WHD)
The primary federal authority on overtime pay, FLSA requirements, minimum wage, employee classifications, and exemptions. The WHD is responsible for administering and enforcing the FLSA. This is the definitive source for all federal overtime regulations used throughout this site.
dol.gov/agencies/whd Visit Official SiteFair Labor Standards Act (FLSA) — Overview & Text
The Fair Labor Standards Act establishes the 40-hour workweek and requires time and a half (1.5×) pay for all eligible overtime hours. All calculator formulas on this site are derived directly from FLSA requirements. The act covers minimum wage, overtime pay, recordkeeping, and youth employment standards.
dol.gov/agencies/whd/flsa Read the FLSA OverviewDOL Fact Sheet #23 — Overtime Pay Requirements Under the FLSA
The official Department of Labor fact sheet specifically about overtime pay — who qualifies, how the regular rate is calculated, what hours count, and how overtime is applied. This document directly informs our FAQ answers and overtime calculation methodology.
dol.gov/sites/dolgov/files/WHD/legacy/files/whdfs23.pdf View Fact Sheet #23 (PDF)Federal Minimum Wage — Current Rate ($7.25/hr)
The current federal minimum wage of $7.25 per hour (unchanged since 2009), which serves as the floor for overtime calculations in states without a higher minimum wage. Our rate tables and worked examples reference this rate for minimum-wage worker scenarios.
dol.gov/general/topic/wages/minimumwage Current Federal Minimum WageFLSA Overtime Exemptions — White Collar Rules (2024)
Official guidance on which employees are classified as exempt from FLSA overtime requirements. Includes the 2024 salary threshold update ($35,568/year minimum for most exempt classifications), duties tests for executive, administrative, and professional exemptions, and the highly compensated employee threshold ($107,432/year).
dol.gov/agencies/whd/overtime/rulemaking Exemption Rules & RulemakingDOL — State Minimum Wage Laws (All 50 States)
The official, continuously updated table from the U.S. Department of Labor listing current minimum wage rates for every state and territory. We reference this to verify state minimum wage data used in our state-specific content and rate tables.
dol.gov/agencies/whd/minimum-wage/state View All State Minimum WagesDOL Overtime Calculator & Worker Resources
The Department of Labor's own overtime pay resource page for workers, including explainers on how overtime is calculated, eligibility requirements, and information on filing a wage complaint if you believe you've been underpaid.
dol.gov/agencies/whd/overtime DOL Overtime Resources29 U.S. Code § 207 — Maximum Hours (The FLSA Overtime Statute)
The actual federal law text that mandates overtime pay. Section 207 is the core statute requiring employers to pay at least 1.5× an employee's regular rate for hours worked beyond 40 in a workweek. Every overtime calculation on this site is derived from this statute. Accessible via Cornell Law School's Legal Information Institute (LII).
law.cornell.edu/uscode/text/29/207 Read 29 U.S.C. § 20729 U.S. Code § 213 — FLSA Exemptions from Overtime
The federal statute that lists which workers are exempt from overtime requirements — including executive, administrative, professional, and outside sales employees. Our FAQ answers and salaried employee content reference this section for exemption explanations.
law.cornell.edu/uscode/text/29/213 Read 29 U.S.C. § 21329 CFR Part 541 — Defining the White Collar Exemptions
The detailed federal regulations that define "executive," "administrative," and "professional" exempt employees. Includes the salary basis test, duties test, minimum weekly salary threshold, and the highly compensated employee definition. Sourced via Cornell LII.
law.cornell.edu/cfr/text/29/part-541 Read 29 CFR Part 541California Department of Industrial Relations (DIR)
Official source for California's unique overtime rules — the most comprehensive state-level overtime laws in the US. Covers daily overtime (1.5× for hours over 8/day), double time (2× for hours over 12/day), and the 7th consecutive day rules. California's wage orders are also sourced here.
dir.ca.gov/dlse/faq_overtime.htm California Overtime RulesNew York State Department of Labor
Official source for New York's minimum wage rates, overtime rules, and Wage Theft Prevention Act requirements. New York follows federal FLSA overtime rules (40 hrs/week) but has a significantly higher minimum wage, which directly affects overtime calculations for NY workers.
labor.ny.gov/workerprotection/laborstandards New York Wage LawsTexas Workforce Commission — Labor Law
Official source for Texas wage and hour law. Texas follows federal FLSA minimums with no additional state-level overtime requirements. Our Texas content confirms that federal rules apply statewide without modification for most workers.
twc.texas.gov/businesses/whd-overview Texas Wage & Hour LawsColorado Department of Labor and Employment (CDLE)
Colorado has unique overtime rules including a daily overtime threshold. The COMPS (Colorado Overtime & Minimum Pay Standards) Order requires overtime for hours over 12 in a workday or over 12 consecutive hours, in addition to the standard 40-hr/week federal rule.
cdle.colorado.gov/wages Colorado Wage Standards (COMPS)Washington State Department of Labor & Industries (L&I)
Washington State follows federal weekly overtime rules but has a significantly higher minimum wage (one of the highest in the US). L&I is the official authority on Washington wage and hour rules, exemption thresholds, and agricultural worker exceptions.
lni.wa.gov/workers-rights/wages Washington Wage LawsCornell Law School — Legal Information Institute (LII)
The LII at Cornell provides free public access to the full text of U.S. federal law, the Code of Federal Regulations, and the U.S. Constitution. We use LII as the reference point for citing specific FLSA statutes (29 U.S.C. § 207, § 213) and overtime regulations (29 CFR Part 541).
law.cornell.edu Visit Cornell LIIUSA.gov — Federal Overtime Pay Information
The official U.S. government information portal provides a plain-language overview of overtime pay rights for workers. We reference this as a general overview source alongside the more detailed DOL sources for FAQ answers about overtime eligibility.
usa.gov/overtime-pay USA.gov Overtime Guide📎 Citing TimeAndHalfCalc.com in Your Work
If you're referencing information from this site in an article, research paper, or document, here's the recommended citation format. Note: For legal or professional documents, always cite the primary government source (DOL.gov) rather than this site directly.
Website citation (APA style):
TimeAndHalfCalc.com. (2025). Time and a half calculator [Online calculator]. https://timeandhalfcalc.com/time-and-a-half-calculator/
For legal/professional documents, cite the primary source instead:
U.S. Department of Labor, Wage and Hour Division. (2024). Overtime pay. https://www.dol.gov/agencies/whd/overtime
Questions? Contact us or email contact@timeandhalfcalc.com
How We Keep Information Current
Overtime laws and wage rates change. Here's our process for staying accurate.
Quarterly Reviews
Every quarter we check DOL.gov, state labor department sites, and the Federal Register for any changes to overtime rules, minimum wage rates, or FLSA thresholds.
Prompt Updates
When the DOL announces changes — like minimum wage increases or new salary thresholds — we update all affected pages within 48 hours of the announcement.
Reader Reports
Spotted outdated or incorrect information? Email us at contact@timeandhalfcalc.com and we'll verify and update within 48 hours.
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