Darrell Jeffrey McClure v. Ei Du Pont Nemours and Company d/b/a Corteva Agriscience

CourtSupreme Court of Iowa
DecidedJune 20, 2025
Docket23-0628
StatusPublished

This text of Darrell Jeffrey McClure v. Ei Du Pont Nemours and Company d/b/a Corteva Agriscience (Darrell Jeffrey McClure v. Ei Du Pont Nemours and Company d/b/a Corteva Agriscience) is published on Counsel Stack Legal Research, covering Supreme Court of Iowa primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Darrell Jeffrey McClure v. Ei Du Pont Nemours and Company d/b/a Corteva Agriscience, (iowa 2025).

Opinion

In the Iowa Supreme Court

No. 23–0628

Submitted April 16, 2025—Filed June 20, 2025

Darrell Jeffrey McClure,

Appellant,

vs.

E. I. du Pont de Nemours and Company d/b/a Corteva Agriscience,

Appellee.

On review from the Iowa Court of Appeals.

Appeal from the Iowa District Court for Keokuk County, Crystal S. Cronk,

judge.

A defendant seeks further review of a court of appeals decision that

reinstated the plaintiff’s claims for disability and age discrimination. Decision

of Court of Appeals Affirmed in Part and Vacated in Part; District Court

Judgment Affirmed.

May, J., delivered the opinion of the court, in which all justices joined.

McDonald, J., filed a concurring opinion.

Megan C. Flynn (argued) of Flynn Law Firm, P.L.C., West Des Moines, and

Michael J. Carroll of Carney & Appleby, P.L.C., Des Moines, for appellant.

Daniel J. Gomez (argued), Corteva Agriscience, LLC, Wilmington,

Delaware; Susan P. Elgin of Faegre Drinker Biddle & Reath LLP, Des Moines;

and Terran C. Chambers of Faegre Drinker Biddle & Reath LLP, Minneapolis,

Minnesota, for appellee. 2

May, Justice.

A warehouse employee for an agricultural company claims that he was

discriminated against based on his disability and his age in violation of the Iowa

Civil Rights Act (ICRA). The district court dismissed those claims at summary

judgment. But the court of appeals concluded that fact questions precluded

summary judgment. On further review, the company argues that the court of

appeals erred and the district court was correct. We agree with the company.

Viewing the record in the light most favorable to the employee, he has

failed to present sufficient evidence that he suffers from a qualifying disability.

In addition, the employee has failed to show that his employer committed age

discrimination. So we vacate in part the decision of the court of appeals and

affirm the district court’s grant of summary judgment.

I. Background Facts and Procedural History.

In 1983, Darrell McClure was hired by Corteva Agriscience (then known

as Pioneer Hi-Bred International, Inc.). He worked there for the next thirty-six

years.

McClure was one of Corteva’s product technicians. His job involved using

a forklift to move products around Corteva’s shipping and processing facility in

Hedrick, Iowa.

During most of his employment at Corteva, McClure worked the third shift

(an eight-hour shift from 10 p.m. to 6:30 a.m.) or the night shift (a twelve-hour

shift from 6 p.m. to 6:15 a.m.). In addition, McClure served as an emergency

medical technician at a county hospital. And he served as a city firefighter.

A. McClure’s Medical Condition. In February 2014, McClure suffered a

heart attack. That August, his doctor wrote a note that said McClure “should not

be on night shift and [should] remain on day shift.” In response, Corteva placed 3

McClure on day shifts only. For his other jobs, though, McClure still worked

night shifts one to two nights a week on an on-call basis.

1. The doctor’s note issue. Three and a half years later, Corteva’s

management changed. McClure’s new manager, Dan Dehrkoop, told him that he

would have to start working nights. McClure responded that he couldn’t due to

his medical condition. And McClure referred Dehrkoop to his doctor’s note from

2014. Initially, Dehrkoop couldn’t find the note. But the note was eventually

found stuck to some other papers in McClure’s file. Dehrkoop then told McClure

that he needed to submit a new note that specified McClure’s exact work

restrictions.

There was some back-and-forth in getting a new note that met Dehrkoop’s

expectations. Altogether, McClure provided three new doctor’s notes. The first

said that McClure couldn’t work a “prolonged night shift schedule.” Dehrkoop

responded by asking for “a more pertinent definition of days and nights and what

[McClure] can and can’t do.” The second note, submitted a week later, said that

McClure couldn’t “work multiple night shifts or a continuous overnight shift

schedule consisting of 1900-0600 hours time frame.” Still, Dehrkoop wanted a

definition of “multiple night shifts.” So, a couple of weeks later, McClure

submitted a third doctor’s note. This note clarified that McClure could, “[i]f

needed, . . . work an occasional overnight shift of one shift, but no more than

two shifts that are not back to back shifts or a scheduled work schedule as to

not severely disrupt his sleep cycle, which would adversely effect his overall

medical condition.”

2. McClure’s internal complaints. This exchange over doctor’s notes

prompted McClure to make an internal complaint with Corteva’s ethics hotline

in October 2017. McClure wrote that he felt discriminated against based on his 4

age, years of service, or medical condition. He claimed that Dehrkoop was trying

to make it harder for him to obtain a work accommodation.

A few days later, McClure reported a different comment made by

Dehrkoop. According to McClure, Dehrkoop questioned why Corteva should

adhere to McClure’s work restriction when he’s a volunteer fire fighter with

overnight fires.

In early 2018, Corteva’s human resources department (HR) determined

that McClure’s complaints were unsubstantiated. Around this same time,

Corteva approved McClure’s request to continue working during the day shift.

We also note that from 2014 on, Corteva never required McClure to work two

back-to-back second or third shifts.

3. McClure’s second heart attack. In April 2019, McClure suffered another

heart attack. McClure then took short-term disability leave for the next two

months.

In June, Dehrkoop emailed Corteva’s local HR manager. Dehrkoop

reported: “Not sure if there is anything we can do, but I have got several

reports . . . that [McClure] who has been out on Short Term Disability (Been out

since 4/24), and has to be close to Long term disability has been working as the

fire chief” and participating in other activities. The issue was escalated to

corporate HR, but nothing came of it.

After McClure returned to work in July, he reported that he was

experiencing migraines brought on by his second heart attack. In early 2020, a

supervisor questioned McClure about calling in late on various occasions in 2019

and 2020. McClure told the supervisor that he had been late due to his

migraines. McClure claims the supervisor responded by saying, “Well, I really

doubt that. I think you’re just trying to sleep in.” 5

In his 2022 deposition, McClure discussed his medical condition. He

explained that his condition did not cause him trouble walking, seeing, hearing,

speaking, or learning. As for working, he said his medical condition caused him

trouble “occasionally.”

B. McClure’s Safety Violations. Over the course of his employment,

McClure racked up a number of safety violations. For our purposes here, we skip

over most of them and jump straight to September 2017.

On September 26, McClure received a written “Progressive Discipline

Warning.” The warning began by saying, “The purpose of this memo is to address

serious issues concerning your work performance. These concerns now result in

a progressive discipline written warning.” The warning then recounted three

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Darrell Jeffrey McClure v. Ei Du Pont Nemours and Company d/b/a Corteva Agriscience, Counsel Stack Legal Research, https://law.counselstack.com/opinion/darrell-jeffrey-mcclure-v-ei-du-pont-nemours-and-company-dba-corteva-iowa-2025.