Member question:
Is there a standard that says ECGs must be read by a cardiologist? We currently require cardiology overreads, but we have trained clinicians onsite. Is this necessary?
This is a common—and important—operational question in occupational health. The short answer is no: there is no universal standard requiring routine ECGs in occupational medicine to be interpreted by a cardiologist. A more accurate and defensible standard is competency-based interpretation with defined escalation criteria.
Below is how the evidence and best practice align.
What the evidence actually says
1. There is no regulatory or professional mandate requiring cardiology-only ECG reads
In U.S. occupational health, ECGs are typically performed as part of employer programs, medical surveillance, or fitness-for-duty evaluations—not specialty cardiology care. OSHA and related frameworks rely on evaluation by a physician or other licensed healthcare professional (PLHCP), not a cardiologist by default.
In other words, the regulatory language supports qualified clinician interpretation, not specialty exclusivity.
2. Basic ECG interpretation is within the competency of trained primary care and OccMed clinicians
The American College of Physicians (ACP) has directly addressed this issue in its recommendations on resting 12-lead ECG interpretation. Their position is clear: ECG interpretation is a core clinical skill, not one reserved solely for cardiologists, provided appropriate training and assessment are in place.
Key ACP principles that translate well to occupational health:
Competence is defined by training and demonstrated ability, not specialty title
Clinicians completing residency training, board certification, and ACLS have a reasonable foundation for ECG interpretation
Ongoing assessment and quality review matter more than rigid referral rules
This aligns with how occupational medicine already handles spirometry, audiometry oversight, chest X-ray interpretation pathways, and many other surveillance tools.
3. Cardiology involvement should be triggered, not automatic
Where cardiology interpretation is appropriate—and strongly recommended—is when ECG findings exceed routine screening or baseline review.
Best practice supports cardiology overread or referral when there is:
An acute or potentially dangerous finding
A significant change compared to a prior ECG
Symptoms suggestive of cardiac disease
An equivocal tracing where the result directly impacts safety-sensitive duty clearance
This approach mirrors how occupational health already escalates abnormal spirometry, audiograms, imaging, or lab findings.
4. Modern interpretive ECG systems support primary-level interpretation
Most contemporary ECG systems provide automated measurements and interpretive statements. These tools are decision support, not replacements for clinician judgment—but they meaningfully reinforce the ability of trained OccMed clinicians to manage routine ECG interpretation safely and consistently.
The ACP specifically addresses computer-assisted ECG interpretation, emphasizing that:
The clinician remains responsible for the final interpretation
Automated reads can enhance accuracy when used appropriately
Quality assurance and feedback loops strengthen reliability over time
For occupational health programs managing volume, consistency, and cost, this is a meaningful operational advantage.
A defensible OccMed position
Taken together, the evidence supports the following position:
Routine ECG interpretation may be performed by qualified occupational health clinicians, with cardiology consultation reserved for defined clinical or safety-based escalation criteria.
Requiring cardiology overreads for every ECG is not wrong—but it is often more conservative than necessary, increases cost and turnaround time, and may not add clinical value for baseline or unchanged findings.
A competency-based model with clear escalation thresholds is both clinically sound and operationally efficient.
Member resource: ECG Interpretation Policy & Procedure (OccMed)
To help members operationalize this safely and consistently, we’ve developed a ready-to-use ECG Interpretation Policy & Procedure for Occupational Health Clinics, including:
Clinician qualification and competency standards
ECG acquisition and documentation workflow
Use of automated interpretive ECGs
Clear red-flag and escalation criteria
Fitness-for-duty and safety-sensitive decision guidance
Quality assurance and overread sampling model
This resource is designed to be dropped directly into your clinic’s medical policies or compliance manual and customized as needed.
Bottom line
Occupational medicine does not need to outsource routine ECG interpretation to cardiology to be safe, compliant, or defensible. What is required is training, clarity, and consistency—and that is exactly where strong OccMed programs distinguish themselves.
If your program is still defaulting to cardiology overreads for all ECGs, this may be an opportunity to reduce friction, cost, and delays—without compromising clinical or safety standards.
Have a related workflow or policy question? Bring it to the OccNation discussion forum—chances are, others are navigating the same issue.