Arizona Severance — At-Will + Right-to-Work, 2.5% Flat Tax, 2026

Arizona WARN: what applies#

Arizona has no state mini-WARN statute. The operative layoff-notice regime for private Arizona 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 or more affected at a single site of employment that constitutes at least 33% of the active workforce, or 500 or more regardless of percentage) or a plant closing. Notice must go to affected employees (or their representatives), the state dislocated-worker unit (in Arizona, the DES Rapid Response team), and the chief elected official of the local government. Liability for non-compliance is back pay and benefits for each day notice was not given, up to 60 days, plus a civil penalty of up to $500 per day payable to the local government. Note: A.R.S. § 23-493 is sometimes mis-cited as an Arizona "mini-WARN" — it is not. Section 23-493 is the definitions section of Arizona's drug- and alcohol-testing statute (Title 23, Chapter 2, Article 14) and has no application to layoff notice. Arizona has no shorter notice, no lower employer-size trigger, and no statutory severance mandate.

How severance is taxed in Arizona#

Arizona has a flat statutory individual income-tax rate of 2.5% for 2026 (A.R.S. § 43-1011, consolidated to a single rate beginning tax year 2023). Unlike California (6.6% supplemental) or Oregon (8% supplemental), the Arizona Department of Revenue does NOT publish a separate supplemental withholding rate. Employers withhold at the employee's elected percentage on Form A-4 — the 2026 election choices are 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, or 3.5% (rates unchanged from 2025 per Bloomberg Tax confirmation) — and that elected rate applies uniformly to regular wages, severance, bonuses, and commissions. If the employee has no A-4 on file, the default withholding rate is 2.0%. Because the elected rate may not match the 2.5% flat statutory rate, year-end liability is reconciled on Form 140; severance withheld at the 2.0% default will under-withhold by 0.5 percentage points and the difference is owed at filing. On top of Arizona 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% up to the wage base, Medicare 1.45% plus 0.9% additional Medicare on wages above $200,000 single / $250,000 MFJ). Arizona has no state disability insurance, no paid family leave premium, and no statewide transit tax on the employee.

Calculate your situation#

Inputs default to Arizona; adjust to your specifics.

FAQ#

Does Arizona require severance pay?

No Arizona statute requires private employers to pay severance. Arizona is one of the strongest at-will employment states in the country: A.R.S. § 23-1501 (the Employment Protection Act) provides that "the employment relationship is severable at the pleasure of either the employee or the employer" unless both parties have signed a written contract to the contrary that sets a specific duration or expressly restricts termination. Without a contract, handbook, plan, or collective bargaining agreement promising severance, the employer has no statutory obligation to pay it. The only layoff-notice regime that carries teeth in Arizona 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. Separately, A.R.S. § 23-353 requires that all earned and unpaid wages be paid within seven working days of discharge or by the next regular payday, whichever is sooner; severance itself is not "wages" for this purpose unless your contract or plan makes it so.

How is severance taxed in Arizona?

Arizona has a flat 2.5% individual income-tax rate (A.R.S. § 43-1011, in effect since tax year 2023). Unlike California or Oregon, the AZ Department of Revenue does NOT publish a separate supplemental-wage withholding rate. Your employer withholds at whatever percentage you elected on Form A-4 — the 2026 choices are 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, or 3.5% — and that elected rate applies uniformly to severance, bonuses, commissions, and regular wages. If you never submitted an A-4, the default rate is 2.0%. Year-end Arizona liability is reconciled at the flat 2.5% statutory rate on Form 140, so severance withheld at 2.0% will leave a small balance due. On top of AZ withholding, severance is subject to the federal 22% supplemental rate (37% on cumulative amounts above $1,000,000 in the year) and FICA (Social Security 6.2% up to the wage base, Medicare 1.45% plus 0.9% additional Medicare on wages above $200,000 single or $250,000 married filing jointly). Arizona has no state disability insurance, no paid family leave premium, and no statewide transit tax — making Arizona's effective state tax burden on severance among the lowest in the country.

Does Arizona have a mini-WARN?

No. Unlike California, New York, New Jersey, or Illinois, Arizona has no state-law mini-WARN. The operative regime 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, the Arizona Department of Economic Security (DES) Rapid Response unit, and the chief elected local official. Failure to comply triggers back pay and benefits for the period notice was not given (up to 60 days), plus a $500/day civil penalty to the local government. One clarification: A.R.S. § 23-493 sometimes appears in checklists as an "Arizona mini-WARN" or notice statute — that is incorrect. Section 23-493 is the definitions section of Arizona's drug- and alcohol-testing statute (Title 23, Chapter 2, Article 14); it defines terms like "drugs," "alcohol," "impairment," and "safety-sensitive position" and has no application to layoff notice. Arizona adds no shorter notice, no lower employer-size trigger, and no statutory severance mandate beyond federal WARN.

Can I collect Arizona unemployment while receiving severance?

Delayed, not eliminated. The Arizona Department of Economic Security (DES) allocates severance, vacation, holiday, and sick pay to specific weeks following your last day of work — either per the contract's allocation schedule, or in the absence of a contract clause, to the weeks immediately following separation at your regular daily rate. You are not eligible to receive UI benefits for any week in which the allocated severance pay exceeds your weekly benefit amount. If the allocated amount is less than your weekly benefit amount, DES deducts the payment (less a $160 disregard) from that week's benefit. The 2026 AZ weekly benefit amount ranges from $236 minimum to $320 maximum (set by A.R.S. § 23-779; raised from the longstanding $240 cap by HB2127 effective 2022). You must report severance, vacation, holiday, or sick pay when you file your initial application and immediately notify the AZ UI Call Center if you receive any such payment after filing — failure to report severance accurately can trigger an overpayment determination plus a fraud penalty of up to 15% under A.R.S. § 23-785 and disqualification for up to a year. File your initial claim at des.az.gov as soon as you separate; the disqualification clock for severance-allocated weeks runs from your last day worked, not from the date you file.

Are non-competes enforceable in Arizona after a layoff?

Yes — Arizona is one of the LESS protective states for laid-off workers on non-competes. Unlike California (statutory void), Minnesota (statutory void post-July 2023), Colorado (statutory threshold $130,014), or Oregon (statutory threshold $119,541), Arizona has NO non-compete statute and no income- or class-based statutory threshold. Enforceability is governed purely by Arizona common-law reasonableness review: courts apply a fact-specific balancing test weighing (1) the employer's legitimate protectable interest (trade secrets, confidential customer relationships, specialized training), (2) the duration of the restriction (most Arizona courts treat six months to two years as presumptively reasonable; anything longer is hard to enforce), (3) the geographic scope (must be limited to where the employer actually does business and where the employee worked — nationwide bans are rarely enforced), and (4) the scope of restricted activity. Arizona courts use the "blue pencil" doctrine — they will strike unreasonable terms but generally will NOT rewrite them, so an overbroad clause can be voided entirely. Crucially, Arizona case law is mixed on whether a non-compete survives a layoff initiated by the employer (as opposed to a resignation); some Arizona courts have suggested the employer may forfeit enforcement when it ends the relationship without cause, but this is not settled. Practical implication for severance: in Arizona, a "non-compete release" in your severance offer often DOES have real value to give up — because absent a clear common-law defect, the underlying restriction may be enforceable. Treat any non-compete release as meaningful consideration when valuing the package, and have an attorney review the duration, geography, and scope before signing.

What other Arizona laws affect a severance package?

Three are worth knowing about. (1) The Employment Protection Act (A.R.S. § 23-1501) makes Arizona the exclusive remedy for most state-law wrongful-termination claims — it limits common-law tort claims and channels disputes into narrow statutory categories (breach of express written contract, retaliation for protected activity such as whistleblowing under A.R.S. § 23-1501(A)(3)(c), refusing to commit an illegal act, exercising workers' comp rights, jury service, voting, union non-membership, or military service). Because the categories are narrow, the "general release of all claims" in your severance agreement gives up less than it would in a state with broader common-law wrongful-discharge protection — useful context for valuation. (2) A.R.S. § 23-353 requires that all earned and unpaid wages be paid within seven working days of an involuntary termination or by the next regular payday, whichever is sooner. Severance itself is not "wages" for this purpose unless your contract or plan makes it so, but accrued vacation IS treated as wages if your employer's policy pays out vacation at separation. (3) Arizona is a right-to-work state under both Ariz. Const. art. XXV and A.R.S. § 23-1302: no employee may be required to join or pay dues to a union as a condition of employment, and union-security clauses are unenforceable. OWBPA is federal and applies in Arizona: if you are age 40 or older and asked to waive age-discrimination claims, you get 21 days to consider (45 for group exits) and 7 days after signing to revoke.