Iowa Drug Testing Laws for Employers

Optional to Test, Mandatory to Comply

Iowa Code 730.5 is not an opt-in program with a benefit attached. Testing is voluntary under 730.5(3), but an employer that tests must satisfy the whole section, and the definition of employee includes the people who usually sit outside a testing pool: the employer itself, the chief executive, president, vice presidents, supervisors, managers and officers actively involved in day-to-day operations.

Federally required testing sits outside the section under 730.5(2), and an employer may use its written policy to exclude federally tested populations from its unannounced pools.

Three Things to Check Before Your Next Draw

1. Who runs the selection. It must be a neutral, objective process run by an entity independent from the employer, using a computer-based random number generator matched to employee identifying numbers, with each selection attempt recorded by date, time and employee number. An HR manager pulling names from a spreadsheet does not satisfy any part of that sentence.
2. The shape of the pool. 730.5(8)(a) permits three pool shapes only, and all three are anchored to a particular work site. A single company-wide random roster — the default for most national programs — is not one of them.
3. Double-pooling. Under 730.5(9)(f) a safety-sensitive employee shall be placed in only one safety-sensitive pool. An employer may maintain several such pools, but the same person may not appear in two.

Iowa also calls this unannounced rather than random testing, and 730.5(1)(l) restricts advance knowledge of a test to employees whose duties include administering the testing program.

The Split Sample and the Seven-Day Window

For current employees the back end is as prescriptive as the front. Under 730.5(7)(b) the sample must be split in two in the employee's presence, with urine split so the primary portion is at least 30 milliliters and the secondary at least 15, both sent to the initial confirmatory laboratory, and the second portion stored at least 45 calendar days after a confirmed positive.

A confirmed positive then triggers written notice stating the result, the right to a second confirmatory test of the split sample at an approved laboratory of the employee's choice, and the fee. The employee has seven days from the date the employer sends that notice to request the second test, name the laboratory and pay. If the second test does not confirm the first, the employer reimburses the fee and the initial result may not be used for discipline.

Applicants run on a different track: written notice of the result, the name and address of the medical review officer who reported it, and the right to request records within fifteen calendar days. Applicants do not get the second-confirmatory-test right.

What Changed in July 2025

House File 767 makes two changes that matter to anyone working from an older compliance memo.

Notice delivery. Certified mail is no longer the only channel. The employer may offer in-person exchange or electronic notification for the confirmed-positive notice and for policy delivery — but the employee chooses the method. Offering electronic notice does not let you impose it.

Burden of proof. This is the bigger one. The act deleted the provision that placed the burden on the employer to prove it met the statute's requirements, and replaced it with a burden on the aggrieved employee to prove by a preponderance that a violation directly caused the damages sought. Liability also now runs against an employer rather than a person, which removes laboratories, medical review officers and third-party administrators from the private cause of action.

That is a meaningful improvement in the employer's position, and it is exactly the sort of change that published summaries take years to catch up with. It does not touch the attorney general's separate thousand-dollar-per-violation penalty for a bad selection process.

The Rest of the Checklist

• Written policy provided to every employee subject to testing before any test, available for review by employees and prospective employees. Where the person is a minor, a copy goes to a parent with a receipt or acknowledgment.
• Uniform stated consequences for a confirmed positive or a refusal, with action based only on the test results, and no adverse action against an employee who completes required rehabilitation.
• An alcohol standard no lower than .02 grams per 210 liters of breath or equivalent.
• Supervisor training: a minimum of two hours initially and one hour annually thereafter for supervisory personnel involved with testing.
• SAMHSA-certified or Iowa-approved confirmatory laboratory, confirmation by a different chemical process such as GC/MS, and medical review officer review of every confirmed positive before it reaches the employer. The MRO definition was broadened in 2025 to include chiropractors, nurse practitioners and physician assistants.
• Hair testing for applicants only, and limited to a sample no longer than one and a half inches taken closest to the skin.
• Suspension pending results is allowed, but if the result is not a confirmed positive violating the policy the employee is reinstated with back pay plus interest at eighteen percent per annum, compounded annually.
• The employer pays all actual testing costs and reasonable transportation to an off-site collection, and testing time is compensable.
• Laboratories file an annual report with Iowa HHS by March 1 covering volumes, results, the statutory basis for each test, drugs found and demographic factors.

The Fifty-Employee Rehabilitation Track

One provision changes what you may do on a first alcohol positive. Under 730.5(9)(g)(1), an employer with at least fifty employees must provide for rehabilitation rather than immediate discharge where the employee has worked there at least twelve of the preceding eighteen months, agrees to rehabilitation, and has not previously violated the policy. The employer's share of uncovered costs is capped at two thousand dollars.

A zero-tolerance policy that promises discharge on any confirmed positive is, for those employers, promising something Iowa does not allow on the alcohol side.

Cannabis: No Protection at All

Iowa has no adult-use program and no conventional medical marijuana program — it runs a narrow medical cannabidiol program under chapter 124E. Iowa Code 124E.21 preserves the employer's ability to restrict use, to enforce a zero-tolerance policy, and to run a drug-free workplace through a 730.5 testing policy.

Iowa then goes further than any other state on this site. Under 730.5(11)(f), no cause of action arises against a compliant employer for testing or taking action against someone with a confirmed positive due to their use of medical cannabidiol authorized under chapter 124E. The registration card is not a defense.

Workers' Compensation

There is no premium credit program we could verify from a primary source; what 730.5 offers is liability immunity rather than an insurance discount. Iowa Code 85.16(2) supplies a benefit-denial route: where the employer shows a positive result at the time of injury or immediately following it, intoxication is presumed and presumed to have been a substantial factor, with the burden then on the employee to overcome it. Section 730.5(7)(m) separately lets an employer rely on a blood test administered by the treating provider after an accident without having requested it.

Where This Lands

Iowa's employment base runs through agriculture and pork production, food and protein processing, agricultural machinery and advanced manufacturing, finance and insurance, wind and biofuels, trucking and warehousing, and healthcare. Protein processing and manufacturing employers tend to run large multi-site random programs, which is precisely the structure the work-site pool requirement cuts against.