Workplace safety and OSHA compliance expert
Expert class library · Personal injury · Either side
Addresses whether an employer, general contractor or property owner followed OSHA rules and industry safety practice in workplace injury cases. Courts usually let a qualified safety professional explain OSHA standards as evidence of safe practice, but bar opinions on a party's intent or state of mind and limit reliance on OSHA rules against defendants, such as manufacturers, to whom they do not apply.
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What this expert is retained to answer
- Does the OSHA standard the expert cites govern this defendant, or only the injured worker's employer?
- Is the expert using OSHA rules as evidence of recognized safe practice, or as a legal duty the jury must apply?
- What field experience or investigation work qualifies the expert for this industry and this hazard?
- Did the expert inspect the equipment or site, and if not, what facts support the opinion?
- Is the expert offering a view of what the employer knew or intended, rather than what safe practice required?
Methods
- OSHA regulation comparison
- Job hazard analysis review
- Training and PPE record review
- Multi-employer worksite analysis
- Industry consensus standard comparison (ANSI, ASSE)
How the testimony is attacked
- Opinions on intent or state of mind. Defendants move to bar opinions that an employer acted deliberately or intended harm. In Lucio v. Levy Environmental Services the Northern District of Ohio excluded a former OSHA investigator's opinion on the employer's intent while allowing his fall hazard and safety practice opinions.
- OSHA does not govern this defendant. Because OSHA regulates employers, a manufacturer can argue that OSHA rules are not a reliable measure of its own conduct. In Almonte v. Averna Vision and Robotics the Western District of New York excluded an engineer's reliance on OSHA guarding rules against a machine manufacturer under New York law.
- Legal conclusions about regulations. Opponents argue that explaining what OSHA requires invades the court's role. In Plyler v. Cox the Fourth Circuit upheld admission of a farm safety expert's OSHA testimony where the court instructed the jury that the regulations were evidence of safe practice, not proof of negligence per se.
- Opinion not based on personal testing. Challengers point out that the expert never tested the condition at issue. Plyler held that an expert could rely on industry experience and observation of similar equipment, leaving the lack of testing to the jury.
- General Duty Clause and relevance. Defendants argue that the General Duty Clause is too vague to set a standard. In Estate of Valdez v. BNSF Railway the Delaware Superior Court held a liability expert's opinion on the employer's compliance with the General Duty Clause relevant and admissible in a workplace exposure case.
What the public record shows
A deliberately narrow CourtListener search, OSHA AND safety AND expert AND (injury OR injured) AND (contractor OR employer) AND (Daubert OR "Rule 702"), returned 49 opinions filed since 2015, as of October 3, 2026; broader searches return more. 4 rulings that show how courts handle this class of testimony:
| Outcome | Case | Court | Why |
|---|---|---|---|
| Limited | Lucio v. Levy Environmental Services Co.173 F. Supp. 3d 558 | N.D. Ohio 2016 | The court found a former OSHA investigator qualified to testify on fall hazards and safety management practice, but excluded under Rule 702 his opinion that the employer acted deliberately, because intent is not a subject of specialized knowledge. |
| Limited | Almonte v. Averna Vision & Robotics, Inc.128 F. Supp. 3d 729 | W.D.N.Y. 2015 | The court granted in part a Rule 702 motion, holding that an engineer's reliance on OSHA machine guarding regulations, which govern employers, was not a reliable basis for judging a manufacturer's design under New York law, while denying the motion otherwise. |
| Admitted | Plyler v. CoxNo. 24-1445 (4th Cir. July 29, 2025) | 4th Cir. 2025 | The Fourth Circuit held the district court did not abuse its discretion in admitting a farm safety expert's testimony on OSHA grain storage regulations as evidence of prevailing safety practice, with a limiting instruction, and his experience based opinion on an inadequate sump door. |
| Admitted | Estate of Valdez v. BNSF Railway Co.C.A. No. N17C-09-299 ALR (Del. Super. Ct. Dec. 15, 2020) | Del. Super. Ct. 2020 | The court denied the railroad's motions against the plaintiff's liability expert, holding that his opinion on the employer's failure to comply with OSHA's General Duty Clause was relevant, helpful and not unfairly prejudicial. |
Each case links to the free opinion text on CourtListener.
Under amended Rule 702
Since December 1, 2023, Rule 702 says expressly that the party offering an expert must show the court it is more likely than not that the testimony meets each requirement: that it rests on sufficient facts or data, uses reliable methods, and reflects a reliable application of those methods to the case. Questions about the basis of an opinion are no longer automatically matters of weight for the jury. For how the circuits have applied the amendment, see the Rule 702 tracker, which follows each court of appeals; for what that means for preparing or attacking this class of expert, see the guide on amended Rule 702.
Related classes
- Machine guarding and industrial equipment engineer
- Industry custom and practice expert
- Product design engineer
Guides
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Last reviewed October 3, 2026. How this page is built: rulings are found by searching court opinions on CourtListener, and each one is read in the opinion before it is summarised here; outcomes are labelled by what the court did with the expert's testimony. No individual expert is named. This page summarises public decisions for orientation and is not legal advice; read the opinion before relying on any ruling.