Discovery in a personal injury case usually takes six months to over a year, though straightforward disputes with clear fault and minor injuries can wrap in as few as four months. How long discovery takes in a personal injury case depends on three things: how complex the injuries are, how many parties are involved, and whether the other side cooperates or fights over every request. A judge sets the outer boundary through a scheduling order early on, but what happens between that first deadline and the last deposition is driven by the facts and by the attorneys.
The Scheduling Order Sets the Outer Limit
Discovery doesn’t run on an open clock. Before formal discovery begins, both sides’ attorneys must meet and develop a written discovery plan covering what needs investigating, when discovery should close, how electronic information will be handled, and how privilege claims will be managed.1Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery The judge then issues a scheduling order within 90 days after a defendant is served or 60 days after a defendant appears, whichever comes first. That order sets the deadlines for completing discovery, joining parties, amending pleadings, and filing motions.2Legal Information Institute. Federal Rules of Civil Procedure Rule 16 – Pretrial Conferences; Scheduling; Management
Once set, the schedule can only be changed on a showing of good cause. That’s why attorneys treat the discovery cutoff as a hard fence rather than a suggestion. Within 14 days of the planning conference, both sides must also exchange mandatory initial disclosures: witnesses with relevant knowledge, supporting documents, a computation of claimed damages, and any applicable insurance agreements.1Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery In a personal injury case, the damages computation forces the plaintiff to lay out medical expenses and lost wages with supporting records from the start.
Discovery Runs in Two Phases
Most personal injury cases move through two distinct discovery stages, and this is a big part of why the process takes as long as it does.
Fact Discovery
This is where both sides collect the raw information: medical records, accident reports, witness accounts, employment records showing lost income, and anything else bearing on fault or damages. The bulk of written questions, document requests, and depositions happen here. In a moderately complex case, fact discovery alone often takes four to eight months.
Each written tool carries a 30-day response clock. Interrogatories (written questions answered under oath, capped at 25 per side) must be answered in 30 days.3Legal Information Institute. Federal Rules of Civil Procedure Rule 33 – Interrogatories to Parties Requests for production of documents get the same 30 days.4Legal Information Institute. Federal Rules of Civil Procedure Rule 34 – Producing Documents, Electronically Stored Information, and Tangible Things, or Entering onto Land, for Inspection and Other Purposes Requests for admission also run 30 days, and unanswered requests are automatically deemed admitted.5Legal Information Institute. Federal Rules of Civil Procedure Rule 36 – Requests for Admission Those clocks look tight on paper. In practice, each set triggers review, objections, and often back-and-forth negotiation before final answers arrive, and gathering records from hospitals and employers routinely takes longer than 30 days because those third parties have their own processes.
Depositions are where the calendar really stretches. Each side gets up to 10 depositions, each capped at one seven-hour day unless the court grants more.6United States Court of International Trade. Federal Rules of Civil Procedure Rule 30 – Depositions by Oral Examination Coordinating attorney availability, witness availability, and a court reporter across a full slate of depositions easily eats weeks. And in nearly every serious personal injury case, the defense will also seek a court-ordered physical or mental examination of the plaintiff, which requires good cause and adds scheduling, report waiting, and sometimes a fight over the results.7Legal Information Institute. Federal Rules of Civil Procedure Rule 35 – Physical and Mental Examinations
Expert Discovery
Expert discovery generally begins after fact discovery closes, on a separate, later deadline in the scheduling order. Each retained expert must produce a written report containing all opinions, the facts and data relied on, qualifications, a four-year list of prior expert testimony, and compensation.1Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery After reports are exchanged, the opposing side gets to depose each expert.
In personal injury cases this commonly means medical experts, vocational rehabilitation specialists, or accident reconstruction engineers. Expert discovery can easily add two to four months, and it’s the phase most people underestimate when asking how long the whole process takes.
What Pushes Discovery Past a Year
Some cases blow well past the one-year mark. The reasons cluster around a few recurring problems.
Severe or complex injuries. Catastrophic injuries involving traumatic brain damage, spinal cord damage, or multiple surgeries generate enormous volumes of medical records from multiple providers. Future care may require life-care planning experts, and treatment may still be ongoing during discovery, making it impossible to calculate final damages until the plaintiff reaches maximum medical improvement. Judges routinely extend discovery deadlines in these cases.
Multiple parties. A multi-vehicle pileup or a case with several defendants means more interrogatories, more document requests, more depositions, and more scheduling headaches. Each defendant has its own attorney, its own experts, and its own strategy. Cross-claims between defendants add another layer on top of the plaintiff’s claims.
Disputed liability. When fault is genuinely contested, both sides need more evidence: surveillance footage, accident reconstruction analysis, additional witness depositions. Each piece triggers counter-investigation. Depositions in disputed-liability cases tend to be longer and more contentious.
Expert bottlenecks. Qualified medical experts and accident reconstruction specialists are in high demand. Retaining one, getting them the case materials, waiting for a report, and scheduling a deposition around their clinical or consulting schedule can take months. Expert fees typically range from $250 to $750 or more per hour, which itself can produce disputes about the scope and necessity of expert testimony.
Digital evidence disputes. Electronically stored information (emails, text messages, GPS data, dashcam footage, metadata) is fully discoverable under the same rules that cover paper documents, and social media content is not shielded by privacy settings when it’s relevant to claimed injuries or credibility.4Legal Information Institute. Federal Rules of Civil Procedure Rule 34 – Producing Documents, Electronically Stored Information, and Tangible Things, or Entering onto Land, for Inspection and Other Purposes Negotiating how ESI will be preserved and produced, and litigating what social media falls within scope, can add weeks or months.
What Keeps Discovery on the Short End
Not every case needs a year. Several conditions can compress the process considerably.
Clear liability. When fault isn’t seriously in dispute (a rear-end collision with an independent witness, for example), neither side invests heavily in proving or disproving how the accident happened. That eliminates accident reconstruction experts, reduces the number of depositions, and keeps interrogatories focused on damages.
Straightforward injuries. A broken arm with a clean treatment history generates a manageable stack of records from one or two providers. Compare that to a brain injury with treatment records from a dozen specialists over two years. Less medical complexity means faster record collection, fewer expert disputes, and a quicker path to calculating damages.
Cooperative opposing counsel. This one is underrated. When both attorneys respond on time, agree to reasonable extensions when needed, and resolve disputes with a phone call instead of a motion, the process runs dramatically faster. An attorney who objects to everything and slow-rolls document production can single-handedly add months.
Where Discovery Commonly Stalls
Even in well-managed cases, disputes are almost inevitable. A few flashpoints reliably eat weeks.
Incomplete or Evasive Responses
Vague answers to interrogatories and slow-rolled document production are the most common delay tactic. When a party gives responses that technically comply but don’t actually answer the question, the requesting attorney has to follow up, first informally, then with a formal motion if nothing changes. That cycle can repeat several times before anyone brings in the judge.
Privilege Log Disputes
A party can withhold documents under attorney-client privilege or work product protection, but it must describe what’s being withheld in enough detail for the other side to test the claim.1Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery That means a privilege log identifying each withheld document, its date, author, recipients, and the basis for the claim. In document-heavy cases, log disputes alone can consume weeks and generate their own round of motions.
Motions to Compel
When informal negotiations fail, the requesting party can file a motion asking the judge to order the other side to produce the disputed material. The mover must first certify a good-faith attempt to resolve it. Briefing, response, and often a hearing add weeks. If the motion is granted, the losing party generally pays the winner’s reasonable expenses, including attorney’s fees, unless its position was substantially justified.8Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions That fee-shifting rule is designed to discourage frivolous objections, but it doesn’t eliminate them.
Protective Orders for Medical Records
Personal injury cases turn heavily on medical records, and disputes over who can see them add another layer. When protected health information is subpoenaed, the parties often need to negotiate a qualified protective order restricting use of the records to the lawsuit and requiring copies to be returned or destroyed after the case ends. Working out those terms can involve multiple rounds before both sides agree.
What Happens When Discovery Closes
The end of discovery isn’t the end of the case. In most personal injury lawsuits, the next stop is mediation or serious settlement negotiation. By this point, both sides have seen each other’s evidence and have a realistic read on strengths and weaknesses. Most personal injury cases settle during or shortly after this phase, which is why the length of discovery matters so much: it largely determines when meaningful settlement discussions can begin.
If settlement talks fail, either party may file a motion for summary judgment, arguing that the discovery record is so one-sided no reasonable jury could find for the other party. Briefing, response, and sometimes oral argument typically add another two to four months. If the motion is denied, the case moves to a pretrial conference and then trial. From filing through trial, a personal injury lawsuit commonly takes one to three years, and discovery accounts for a significant portion of that timeline.