Illinois Overtime Calculator
Calculate overtime pay under Illinois FLSA rules and the One Day Rest in Seven Act
Illinois Calculator
Get accurate results
Updated for 2025 with real Illinois rates, brackets, and regulations
Illinois follows federal FLSA overtime rules requiring 1.5x pay for hours worked over 40 in a workweek, with no daily overtime requirement. However, Illinois has a unique additional protection: the One Day Rest in Seven Act (ODRISA, 820 ILCS 140), which requires employers to provide at least 24 consecutive hours of rest in every calendar week and a meal break of 20 minutes for shifts of 7.5+ hours. Effective January 1, 2023, amendments to ODRISA strengthened penalties and expanded coverage. Our calculator computes your weekly and annual overtime earnings under Illinois rules, factoring in the 4.95% flat state income tax.
Calculate Your IL Tax
Weekly Gross Pay
$1,375
Regular Pay
$1,000/wk
Overtime Pay (1.5x)
$375/wk
OT Rate
$37.50/hr
Monthly Total
$5,954
Annual OT Earnings
$19,500
Annual Gross
$71,500
IL OT Rule
Weekly >40hrs only (FLSA)
Breakdown
Insight
Working 40 regular + 10 overtime hours at $25/hr earns $1,375/week ($71,500/year) in Illinois. IL follows federal FLSA overtime: 1.5x pay after 40 hours/week — no daily overtime (unlike California). Key IL law: the One Day Rest in Seven Act (ODRISA) requires at least 24 consecutive hours off in every 7-day period; retail workers must get at least 1 day off per calendar week. Violations carry a $500/day civil penalty. IL also has a Wage Payment and Collection Act — employers must pay wages on scheduled paydays; deductions require written consent.
AI Explanation
What This Means
Based on default inputs, the Illinois Overtime Calculator shows a weekly gross pay of $1,375. Key figures: Regular Pay: $1,000/wk, Overtime Pay (1.5x): $375/wk, OT Rate: $37.50/hr, Monthly Total: $5,954, Annual OT Earnings: $19,500, Annual Gross: $71,500, IL OT Rule: Weekly >40hrs only (FLSA).
Key Insights
Working 40 regular + 10 overtime hours at $25/hr earns $1,375/week ($71,500/year) in Illinois. IL follows federal FLSA overtime: 1.5x pay after 40 hours/week — no daily overtime (unlike California). Key IL law: the One Day Rest in Seven Act (ODRISA) requires at least 24 consecutive hours off in every 7-day period; retail workers must get at least 1 day off per calendar week. Violations carry a $500/day civil penalty. IL also has a Wage Payment and Collection Act — employers must pay wages on scheduled paydays; deductions require written consent.
What You Can Do
Enter your actual figures in the calculator above for a personalized breakdown. Consider consulting a tax professional for comprehensive planning, especially for complex situations involving multiple income sources or deductions.
Keep In Mind
This calculator provides estimates based on 2026 rates. Actual tax liability may vary based on credits, exemptions, and other factors not captured here. This is for educational purposes only and should not be considered tax advice.
How the Illinois Overtime Calculator Works
The Illinois Overtime Calculator uses 2026 tax rates, brackets, and deductions specific to Illinois to provide you with an accurate estimate of your tax obligations. Unlike generic federal-only calculators, this tool accounts for the unique tax structure that Illinois residents face.
Formula
Overtime Pay = Hours Over 40/week x Regular Rate x 1.5. Illinois follows federal FLSA only for OT threshold (no daily OT). ODRISA: mandatory 24hr rest per 7-day period. Regular Rate includes hourly wage + non-discretionary bonuses + shift differentials.Simply enter your financial details above, and the calculator instantly computes your results using the latest available data. All calculations happen directly in your browser — your personal information is never sent to any server or stored anywhere.
Why Use a Illinois-Specific Calculator?
State-Specific Rates
Uses real 2026 Illinois tax brackets, rates, and thresholds — not generic national averages that miss state-level nuances.
Local Programs & Exemptions
Factors in Illinois-specific programs, exemptions, and deductions that national calculators simply don't account for.
Instant & Private
All calculations run locally in your browser. No account required, no data stored, no waiting for results.
AI-Powered Explanations
Get a plain-English breakdown of your results with actionable insights you can actually use for financial planning.
What's Included
FLSA Weekly Threshold
Calculate 1.5x overtime pay for every hour over the 40-hour federal weekly threshold in Illinois.
ODRISA Compliance Check
Verify your employer is following the One Day Rest in Seven Act requiring 24 hours of rest per week.
Annual OT Projection
Project your total annual earnings including regular overtime shifts, minus the 4.95% IL flat tax.
Frequently Asked Questions
Does Illinois have state overtime laws beyond FLSA?
Illinois relies on the federal FLSA for the overtime pay threshold (1.5x after 40 hours/week). There is no daily overtime requirement and no double-time provision. However, Illinois supplements FLSA with the One Day Rest in Seven Act (ODRISA), which mandates employers provide 24 consecutive hours of rest every 7 days and a 20-minute meal break for shifts of 7.5+ hours.
What is the One Day Rest in Seven Act (ODRISA)?
ODRISA (820 ILCS 140) requires Illinois employers to give every employee at least 24 consecutive hours of rest in every calendar week. Amended in 2023 (HB 3733), the law now requires employers to post notices, strengthens penalties for violations ($250-$500 per offense), and clarifies that employers must get written permission from the Illinois Department of Labor to schedule employees 7 consecutive days.
Who is exempt from overtime in Illinois?
Illinois follows federal FLSA exemptions: executive, administrative, professional, computer, and outside sales employees earning at least $55,068/year salary (2024 DOL threshold) are exempt. Illinois also exempts certain agricultural workers, government employees, and employees covered by specific collective bargaining agreements. The salary threshold was raised significantly in 2024.
Does overtime affect my Illinois taxes?
Because Illinois uses a flat 4.95% tax rate, overtime pay is taxed at the same rate as regular income — there are no higher state brackets to push you into. Federal taxes may increase your effective rate on overtime pay due to progressive brackets. Overall, Illinois overtime workers avoid the bracket-creep problem that hits workers in progressive-tax states.
Can Illinois employers require mandatory overtime?
Yes, Illinois employers can generally require overtime, and refusing can be grounds for discipline. However, ODRISA limits this by requiring at least one day off per week. Healthcare workers have additional protections under the Illinois Nurse Staffing by Patient Acuity Act, which restricts mandatory overtime for nurses. All overtime hours, whether voluntary or mandatory, must be paid at 1.5x.
Important Information for Illinois Residents
Tax laws in Illinois can change annually. This calculator is updated regularly to reflect the latest 2026 rates and regulations, but you should always verify important financial decisions with a qualified Illinois tax professional or CPA.
This tool is designed for informational and educational purposes. While we strive for accuracy using official Illinois Department of Taxation data, the results should be used as estimates for planning purposes only. Your actual tax liability may differ based on credits, special circumstances, and legislative changes that occur after our last update.
For filing deadlines, payment schedules, and official forms, visit the Illinois Department of Taxation and Finance website. If you have complex tax situations involving multiple states, business income, or significant investment gains, professional guidance is recommended.
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