Georgia Expert Witness Statute: Qualifications, Daubert, and Disclosure

Georgia’s expert witness statute, O.C.G.A. 24-7-702, controls who can testify as an expert, what their testimony must rest on, and when a judge can keep it out. It adopts a Daubert-style reliability framework, layers extra requirements onto medical malpractice cases, and works alongside related rules on the bases of expert opinions, discovery, and court-appointed experts. If you are preparing to sue, defend a claim, or hire an expert in Georgia, these are the rules that decide whether your expert’s opinion ever reaches the jury.¹

Who Qualifies as an Expert

Under O.C.G.A. 24-7-702, a witness can be qualified as an expert by knowledge, skill, experience, training, or education in a field relevant to the case. A formal degree is not required. Hands-on professional experience can be enough, so long as the trial judge finds the witness competent in the specific area at issue.¹

Being qualified is only half the fight. A court can find an engineer qualified to talk about structural loads and still exclude the testimony if the underlying analysis was unreliable. Qualification and admissibility are separate steps, and the judge decides both.

The Four Admissibility Requirements

Even a well-credentialed expert is out if the testimony itself falls short. O.C.G.A. 24-7-702 requires all four of the following before an expert opinion comes in:

The specialized knowledge must actually help the jury understand evidence or decide a disputed fact. Testimony that only restates what a layperson could figure out adds nothing.
The opinion must rest on sufficient facts or data, not speculation or thin assumptions.
The expert must use principles and methods recognized as reliable in the relevant field.
The expert must have applied those methods reliably to the specific facts of the case.

All four elements must be satisfied. Solid science applied to the wrong facts fails the fourth prong. A perfectly executed study with no bearing on the disputed issue fails the first.¹

The Daubert Gatekeeping Framework

When Georgia overhauled its evidence code effective January 1, 2013, it replaced the older Frye “general acceptance” test with a framework drawn from Daubert v. Merrell Dow Pharmaceuticals (1993), General Electric Co. v. Joiner (1997), and Kumho Tire Co. v. Carmichael (1999). The statute explicitly directs Georgia courts to treat those federal decisions and their progeny as persuasive authority.²

The trial judge is the gatekeeper. In assessing reliability, courts weigh factors including whether the methodology has been tested, whether it has been subjected to peer review, its known error rate, whether standards control its application, and whether it has gained acceptance in the relevant professional community.³ These are guidelines, not a checklist. The judge has discretion to emphasize whichever considerations fit the type of testimony at issue.

Either side can request a pretrial hearing to challenge whether the witness qualifies and whether the proposed testimony meets the reliability and relevance requirements. In civil cases, the hearing and the judge’s ruling must be completed no later than the final pretrial conference.¹ Waiting until trial to raise a Daubert challenge in a civil case is generally too late.

Medical Malpractice: A Higher Bar and a Filing Trap

Medical malpractice cases carry qualification requirements above the general rule. Under O.C.G.A. 24-7-702(c), an expert offering opinions on the standard of care must satisfy one of two paths, measured from the date the alleged malpractice occurred:

Regularly engaged in active practice of the relevant specialty for at least three of the last five years, or
A faculty member teaching that specialty at an accredited institution for at least three of the last five years.

The judge also evaluates whether the expert performed or taught the specific procedure or treatment at issue with enough frequency to have genuine familiarity.¹

The Expert Affidavit at Filing

This is the trap that catches unprepared plaintiffs. Under O.C.G.A. 9-11-9.1, anyone filing a professional malpractice lawsuit in Georgia must attach an affidavit from a qualified expert to the complaint itself. The affidavit must identify at least one specific negligent act or omission and lay out the factual basis for each claim.⁴

If the statute of limitations is about to expire and there was not enough time to prepare the affidavit, the plaintiff’s attorney can file a sworn statement that the firm was retained fewer than 90 days before the deadline. That buys an additional 45 days to supplement the complaint. If the affidavit still does not materialize inside that window, or if the attorney was in fact retained more than 90 days before the limitations period expired, the court will dismiss the case for failure to state a claim. That dismissal can block refiling under Georgia’s renewal statute, effectively ending the case for good.⁴

What the Expert Can Rely On and Testify About

The Basis for the Opinion

Not every fact an expert relies on has to be independently admissible. Under O.C.G.A. 24-7-703, an expert can base opinions on facts or data perceived before or during the hearing, even if that underlying information would not itself come in, so long as experts in the field reasonably rely on that type of information. A physician can rely on medical records, lab results, and reports from other doctors when forming a diagnosis, even if some of those records are not formally admitted.⁵

There is a limit. The party offering the expert cannot parade otherwise-inadmissible facts before the jury as a backdoor around the evidence rules. The court will disclose that underlying data to the jury only if its value in helping the jury evaluate the expert’s reasoning substantially outweighs any unfair prejudice.⁵

Opinions on the Ultimate Issue

Georgia experts can offer opinions that reach the ultimate issue for the jury. An accident reconstruction expert can state that a driver was at fault. An engineer can testify that a building was structurally deficient. The opinion is not excluded merely because it touches the central question.⁶

One hard exception applies in criminal cases. An expert testifying about a defendant’s mental state cannot say whether the defendant did or did not have the specific mental state required for the charged crime or any defense. A psychiatrist can describe a diagnosis and its behavioral effects, but cannot testify that the defendant lacked the intent to commit murder. That question belongs to the jury.⁶

Disclosing Experts in Discovery

Georgia State Court

Georgia’s Civil Practice Act allows parties to learn about the other side’s experts through interrogatories, but the mechanism is less detailed than the federal report requirement. Under O.C.G.A. 9-11-26(b)(4), a party can require the other side to identify each expert expected to testify at trial, describe the subject matter of the expected testimony, summarize the substance of the opinions, and outline the grounds for each.⁷

Parties can also depose the opposing side’s testifying expert. The party taking the deposition must pay the expert a reasonable fee for time spent responding to discovery. If the parties disagree over what “reasonable” means, either the expert or any party can ask the court to set the amount.⁷

Consulting experts who are not expected to testify get stronger protection. A party can discover facts known or opinions held by a non-testifying expert only in exceptional circumstances where there is no other practical way to obtain the information.

Federal Court in Georgia

Cases in Georgia’s federal courts follow the more structured disclosure regime in Federal Rule of Civil Procedure 26(a)(2). A retained expert must provide a signed written report containing a complete statement of all opinions and their bases, the facts and data considered, supporting exhibits, the expert’s qualifications and publications over the past ten years, a list of cases in which the expert testified over the past four years, and a statement of compensation for the engagement.⁸

Default timing calls for expert disclosures at least 90 days before trial, with rebuttal disclosures due within 30 days after the other side’s disclosure. Courts routinely reset those deadlines through scheduling orders.⁸

Court-Appointed Experts

Georgia judges are not limited to the experts the parties choose. Under O.C.G.A. 24-7-706, the court can appoint its own expert on its own initiative or at a party’s request. The court may ask both sides to nominate candidates, appoint an expert the parties agree on, or select one independently. The expert must consent and is informed of duties in writing.⁹

A court-appointed expert must share findings with both sides, can be deposed by any party, and is subject to cross-examination. In criminal cases and eminent domain proceedings, compensation comes from public funds. In other civil cases, the court divides the cost between the parties as it sees fit. Appointment of a court expert does not prevent either side from calling additional experts of their own.⁹

Fees and the Contingency Prohibition

Georgia’s baseline witness fee is $25.00 per day of attendance, plus mileage at $0.45 per mile for travel to and from the courthouse. That statutory rate applies to all witnesses, including experts, for courtroom attendance under subpoena.¹⁰ Experts routinely charge far more than that in practice. Georgia law has long recognized that because an expert cannot be compelled to prepare a case, review records, listen to testimony, or develop an opinion, the expert can demand separate compensation for those services beyond the statutory witness fee.

The ethical line that matters most is fee structure. The State Bar of Georgia’s ethical guidelines prohibit tying an expert’s compensation to the outcome of the case. A contingency arrangement in which the expert is paid only if the client wins would compromise the objectivity the court depends on. Flat hourly rates and fixed fees for defined work are the standard arrangements, and billing must be transparent and reasonable.

1
Justia. Georgia Code 24-7-702 – Expert Opinion Testimony; Medical Experts
2
Justia. Georgia Code 24-7-702 – Expert Opinion Testimony
3
Legal Information Institute. Daubert Standard
4
Justia. Georgia Code 9-11-9.1 – Affidavit to Accompany Charge of Professional Malpractice
5
Justia. Georgia Code 24-7-703 – Bases of Expert Opinion Testimony
6
Justia. Georgia Code 24-7-704 – Ultimate Issue Opinion
7
FindLaw. Georgia Code Title 9 Civil Practice 9-11-26
8
Legal Information Institute. Rule 26 – Duty to Disclose; General Provisions Governing Discovery
9
FindLaw. Georgia Code Title 24 Evidence 24-7-706
10
Justia. Georgia Code 24-13-25 – Fees and Mileage; When Tender Required