A business owner discovers that the lawyer who handled the sale of her company left an indemnity obligation out of the purchase agreement, and the buyer is now pursuing her for it. A family learns, more than a year after a routine surgery, that the signs of a post-operative infection were charted for days before anyone acted on them. In both situations, someone relied on a licensed professional to do work they could not evaluate on their own, and that reliance cost them.
South Carolina law does not treat those situations like an ordinary accident. They are claims of professional negligence, and they carry their own standard of proof, their own evidentiary requirements, and steps that have to be completed before a lawsuit can be filed at all. Those steps are also why the timing of the first conversation matters as much as it does.
This post explains how professional negligence claims work in South Carolina, how the standard of care is proven, what the law requires before filing, and what is worth gathering when a potential claim first comes to light.
What Is Professional Negligence?
Professional negligence occurs when a licensed professional fails to exercise the degree of care, skill, and judgment that a reasonably careful member of the same profession would have exercised under similar circumstances, and that failure causes harm. Legal malpractice and medical malpractice are its two familiar forms, and they are the two Bland Richter handles.
What separates it from ordinary negligence is who sets the standard. After a car accident, a jury can decide from common experience whether a driver acted carelessly. A jury cannot decide from common experience whether a surgeon’s post-operative monitoring was adequate, or whether a transactional lawyer should have drafted an indemnity clause differently. The profession itself defines what reasonable care looks like, and that standard has to be proven through testimony from someone qualified in the same field.
A viable claim generally rests on four elements: a professional relationship that created a duty, conduct that fell below the professional standard of care, a causal connection between that conduct and the harm, and actual damages.
Is a Bad Outcome the Same as Negligence?
No. A lost case, an unsuccessful surgery, or a transaction that went poorly is not, by itself, evidence that a professional did anything wrong. Professionals are held to a standard of reasonable care rather than a standard of perfect outcomes, and the law leaves room for judgment calls that turn out badly.
The real question is narrower. It is whether the professional’s conduct departed from what a competent member of the same profession would have done, and whether that departure, rather than the underlying problem the client brought to them, caused the loss. Separating those two things is often the central work of the case.
How Is the Standard of Care Proven?
Through testimony from a qualified witness who practices in the same field and can explain what reasonable care required under the circumstances, where the defendant’s conduct fell short, and why it mattered. In a legal malpractice case, that witness is ordinarily another attorney familiar with the area of practice at issue. In a medical malpractice case, it is a physician or other health care professional whose training and experience are comparable to the defendant’s.
This is also where the two claim types part ways. A legal malpractice claim usually requires proving a case within a case, which means showing what the underlying matter would have looked like had it been handled properly. A medical malpractice claim turns on medical causation, which means showing that the treatment decision at issue, and not the patient’s underlying condition, produced the injury. Our earlier posts on legal malpractice and medical malpractice in South Carolina cover each claim in more detail.
What Does South Carolina Require Before a Professional Negligence Lawsuit Is Filed?
South Carolina requires a plaintiff bringing a professional negligence claim against a licensed professional to file an affidavit from a qualified expert witness together with the complaint. The affidavit must identify at least one specific negligent act or omission and the factual basis for that opinion. The requirement reaches claims against a range of licensed professionals, including attorneys and health care providers, and a complaint filed without it is subject to dismissal, with limited exceptions.
Medical malpractice claims carry additional steps. Before a complaint can be filed, the plaintiff must serve the health care provider with a notice of intent to file suit, accompanied by the affidavit, and the parties must take part in a pre-suit mediation process. Only after that process concludes does the matter move forward as a filed lawsuit.
The practical effect is that a professional negligence claim has to be substantially investigated, and reviewed by a qualified professional, before it is ever filed. That work happens at the front of the case rather than during discovery, and it takes real time.
Why Does Timing Matter So Much in These Cases?
South Carolina sets filing deadlines for professional negligence claims, and in many cases the period begins when the harm was discovered, or reasonably should have been discovered, rather than on the date of the error itself. Medical malpractice claims are also subject to an outer time limit that can apply regardless of when the injury came to light.
The pre-suit requirements run inside that same window. Identifying the right reviewing professional, assembling the records, and preparing the affidavit all take time, and for medical claims the notice and mediation process adds more. A matter that reaches a litigation firm a few weeks before a deadline is a considerably harder matter than the same facts arriving several months earlier, and in some cases the difference decides whether a claim can be brought at all.
Defendants in these cases also routinely argue that the clock started earlier than the plaintiff believes. Any question about timing belongs in the first conversation, not the third.
What Should Be Gathered When a Potential Claim First Comes to Light?
The same materials matter to the person who was harmed and to the attorney, CPA, or advisor who first hears about the problem.
The engagement documents come first. For a legal matter, that means the engagement letter, the fee agreement, and any correspondence defining what the lawyer was hired to do. For a medical matter, it means the complete records from every provider involved, including billing records, which often fill gaps the chart leaves open.
The file itself is next: the documents, emails, and text messages exchanged with the professional, along with any work product the client received. A written timeline is close behind it, covering what happened, when the problem was first noticed, who noticed it, and what was said at the time.
Documentation of the loss completes the picture. Depending on the matter, that might be a judgment, a failed transaction, later medical bills, or the cost of hiring another professional to correct the problem.
Two cautions apply early. A release, a fee compromise, or a new agreement with the professional involved can affect a later claim, so it is wise to have an independent lawyer review any such document before it is signed. And conversations with the professional about the problem should be written down while they are still fresh.
How Should a Referring Professional Approach One of These Matters?
Attorneys who practice outside litigation, and accountants and financial advisors who notice something wrong in a client’s affairs, are often the first to see a potential professional negligence claim. Seeing it early has real value. Because the case needs investigation and a qualified review before anything is filed, a referral made while the timeline still has room gives that work a fair chance.
It is also a delicate referral to make. The professional whose work is in question may be someone the referring attorney knows, practices near, or sees at bar functions. A litigation firm that regularly handles these claims understands that dynamic, keeps the referring professional informed, and keeps them out of the middle of the dispute.
What to Expect When You Reach Out
When a potential professional negligence matter comes to Bland Richter, the first questions are about timing and records: where the filing window stands, what the file shows, and whether the conduct at issue can be tied to the loss. From there, the partners assess whether the matter can support the qualified review South Carolina requires before filing.
The assessment you receive is direct. When a matter is not one the firm should take on, you hear why. When it does move forward, a referring professional is kept informed at each stage.
About Bland Richter, LLP
Bland Richter, LLP is a South Carolina litigation firm with offices in Lexington and Charleston, founded by Eric Bland and Ronnie Richter, who have practiced together since 1998. Professional liability has been central to both partners’ practices for decades, alongside commercial litigation and estate litigation. The firm is boutique by design and partner-led from day one. To learn more, visit our Legal Malpractice or Medical Malpractice page.