Oklahoma Severance — § 219A Non-Compete Void, 4.5% Top Rate (2026 Cut), 2026

Oklahoma WARN: what applies#

Oklahoma has no state-level mini-WARN notice statute. The operative layoff-notice regime for Oklahoma private employers is federal WARN (29 U.S.C. §§ 2101–2109): employers with 100 or more full-time employees must give 60 days advance written notice for a mass layoff (50+ affected at a single site of employment constituting at least 33% of the active workforce, or 500+ regardless of percentage) or a plant closing. Notice must go to affected employees (or their representatives), the Oklahoma Employment Security Commission (OESC) Rapid Response unit, and the chief elected official of the local government. Federal WARN penalties: back pay and benefits for each day notice was not given (up to 60 days), plus a $500/day civil penalty payable to the local government. Oklahoma adds no shorter notice, no lower employer-size trigger, and no statutory severance mandate.

How severance is taxed in Oklahoma#

Oklahoma operates a 3-bracket graduated individual income tax under 68 OK Stat. § 2355, with rates ranging from 0.5% to 4.5%. Effective January 1, 2026, the bracket structure was collapsed from six brackets to three and the TOP marginal rate was reduced from 4.75% (2024–2025) to 4.5% per recent Oklahoma tax legislation. Severance-recipient earners commonly fall in the top 4.5% bracket. Oklahoma does NOT publish a separate flat supplemental withholding rate; the Oklahoma Tax Commission OW-2 Withholding Tax Tables direct employers to apply the graduated tables to all wages including supplemental wages, producing an effective ~4.5% rate for top-bracket earners. Oklahoma has no state-level local income tax on wages. On top of Oklahoma state withholding, severance is subject to the federal 22% supplemental rate (37% on cumulative amounts above $1,000,000 in a calendar year) and FICA (Social Security 6.2% to the wage base, Medicare 1.45% plus 0.9% additional Medicare on wages above $200,000 single / $250,000 MFJ).

Calculate your situation#

Inputs default to Oklahoma; adjust to your specifics.

FAQ#

Does Oklahoma require severance pay?

No Oklahoma statute requires private employers to pay severance. Oklahoma has no state mini-WARN that would mandate pay-in-lieu of notice. The only layoff-notice regime that carries teeth in Oklahoma is federal WARN (29 U.S.C. §§ 2101–2109), which requires 60 days advance notice (or back pay for missed days) at employers of 100+ for covered mass layoffs and plant closings — but WARN mandates notice, not severance. Severance is therefore employer-discretionary in Oklahoma unless your employment agreement, written severance plan, or company handbook makes it mandatory. Oklahoma is an at-will employment state.

How is severance taxed in Oklahoma?

Oklahoma operates a 3-bracket graduated individual income tax under 68 OK Stat. § 2355, with rates ranging from 0.5% to 4.5%. Effective January 1, 2026, the bracket structure was collapsed from six brackets to three and the TOP marginal rate was reduced from 4.75% (2024–2025) to 4.5% per recent Oklahoma tax legislation. Severance-recipient earners commonly fall in the top 4.5% bracket. Oklahoma does NOT publish a separate flat supplemental withholding rate; the Oklahoma Tax Commission OW-2 Withholding Tax Tables direct employers to apply the graduated tables to all wages including supplemental wages, producing an effective ~4.5% rate for top-bracket earners. Oklahoma has no state-level local income tax on wages. On top of Oklahoma state withholding, severance is subject to the federal 22% supplemental rate (37% on cumulative amounts above $1,000,000 in a calendar year) and FICA (Social Security 6.2% to the wage base, Medicare 1.45% plus 0.9% additional Medicare on wages above $200,000 single / $250,000 MFJ). Year-end Oklahoma liability is reconciled on Form 511 (resident) or 511-NR (nonresident/part-year).

Does Oklahoma have a mini-WARN statute?

No. Oklahoma has no state-level mini-WARN that imposes employer notice obligations independent of federal WARN. The operative regime is federal WARN (29 U.S.C. §§ 2101–2109): 60 days advance notice at employers of 100+ for mass layoffs affecting 50+ at a single site that constitute at least 33% of the active workforce (or 500+ regardless of percentage). Notice goes to affected employees, the Oklahoma Employment Security Commission (OESC) Rapid Response unit, and the chief elected local official. Federal WARN penalties: back pay and benefits for each day notice was not given (up to 60 days), plus a $500/day civil penalty payable to the local government. Oklahoma adds no shorter notice, no lower employer-size trigger, and no statutory severance mandate.

Does OWBPA apply in Oklahoma?

Yes. OWBPA is federal (29 U.S.C. § 626(f)) and applies in all states. If you are age 40 or older and your Oklahoma employer asks you to sign a waiver of age-discrimination claims under the ADEA in your severance agreement, the waiver is enforceable only if you receive at least 21 days to consider the agreement (45 days for group exits — a 'reduction in force' or 'exit incentive program'), and 7 days after signing to revoke. Group exits additionally require disclosure of the ages and job titles of all selected and non-selected employees in the decisional unit. The Oklahoma Anti-Discrimination Act (25 OK Stat. § 1101 et seq.) separately prohibits age discrimination (40+) by employers with 15 or more employees — a lower threshold than the federal ADEA's 20-employee minimum, so smaller Oklahoma employers are still covered by state law. A release of state-law age claims under OADA does not require OWBPA-compliant 21/45/7 procedures, but the federal ADEA release portion still does.

Can I collect Oklahoma unemployment while receiving severance?

It depends on how the severance is structured. Oklahoma's unemployment disqualification rules are at 40 OK Stat. § 2-405 (Disqualifying acts) and related sections of the Oklahoma Employment Security Act. In practice, the Oklahoma Employment Security Commission (OESC) treats severance pay based on allocation: severance designated as 'wages in lieu of notice' or salary continuation tied to a specific notice period typically offsets UI benefits week-by-week during the allocated weeks; a lump-sum severance not designated to specific weeks is more likely to be allocated to the separation date. Practical takeaways: (a) file your Oklahoma UI claim with OESC on or shortly after your last day worked at oklahoma.gov/oesc to establish your benefit year; (b) fully disclose the severance amount, structure, and any employer designation when you apply and on weekly certifications — failure to report severance is fraud; (c) Oklahoma's UI maximum weekly benefit amount is in the $539 range for 2026 — verify the live figure at oklahoma.gov/oesc before relying on net-of-benefits figures.

Are non-competes enforceable in Oklahoma after a layoff?

NO for most ordinary employment non-competes — this is the HEADLINE Oklahoma fact. 15 OK Stat. § 219A (Title 15, Chapter 4 — Unlawful Contracts) statutorily voids most employer non-competes. The statute permits former employees to engage in competing business activities after employment ends, with one narrow CUSTOMER-SOLICITATION exception: a former employee may be restricted from 'directly solicit[ing] the sale of goods, services or a combination of goods and services from the established customers of the former employer.' Any contract provision in conflict with § 219A is statutorily 'void and unenforceable.' Oklahoma joins California (Cal. Bus. & Prof. Code § 16600), North Dakota (N.D.C.C. § 9-08-06), Montana (MCA § 28-2-703), and Minnesota (MN HF 100 of 2023) as states where most employer post-employment non-competes are categorically void by statute. The narrow CUSTOMER-SOLICITATION carve-out in § 219A is more limited than a traditional non-compete: employees can still WORK for a competitor in the same industry — they just can't directly solicit business from the former employer's established customers. Separately, 15 OK Stat. § 219B governs broader 'non-solicitation' contracts (e.g., employee non-solicitation of former co-workers), which are evaluated under a reasonableness test. PRACTICAL IMPLICATION: a non-compete release clause in an Oklahoma severance offer is typically releasing a covenant that is already statutorily void under § 219A — assigning low marginal value to the release on its own. Customer non-solicitation provisions (allowed under the § 219A carve-out) and employee non-solicitation provisions (governed by § 219B) may have real value if released; the broad non-compete typically does not.

How does the 2026 Oklahoma tax cut affect my severance check?

Effective January 1, 2026, Oklahoma's individual income tax bracket structure was collapsed from six brackets to three, and the top marginal rate was reduced from 4.75% (2024–2025) to 4.5% per recent Oklahoma tax legislation. For severance paid in 2026, the top marginal rate dropped from 4.75% to 4.5% — a 0.25-percentage-point reduction. For a $100,000 severance taxed at the top bracket, that's $250 less Oklahoma tax compared to 2025. The reduction is part of a multi-year trend among states cutting income taxes since 2021 (the Tax Foundation has tracked '26 states enacted individual income tax rate reductions from 2021 to 2023'). At 4.5%, Oklahoma's top rate is meaningfully lower than several states with higher top brackets (Hawaii 11.0%, Oregon 9.9%, Minnesota 9.85%, Vermont 8.75%, New York 10.9%, California 13.3%, New Mexico 5.9%, Montana 5.9%, West Virginia 4.58%), but still higher than the lowest-tax-state-with-an-income-tax peers (Arizona 2.5%, North Dakota 2.50% top bracket, Ohio 2.75%, Indiana 2.95%, Pennsylvania 3.07%, Louisiana 3.0%, Kentucky 3.5%, Iowa 3.8%, Arkansas 3.9%, Mississippi 4.0%, Michigan 4.25%, Utah 4.5%) — and of course higher than the no-income-tax states (AK, FL, NV, NH, SD, TN, TX, WY). Verify the live Oklahoma Tax Commission OW-2 Withholding Tax Tables before relying on net-of-tax figures.