In federal court, a discovery request creates an undue burden in discovery when the cost or difficulty of producing the information is out of proportion to what the information is actually worth to the case. Rule 26(b)(1) sets the test, and it is a weighing exercise rather than a fixed dollar line. The party resisting production usually has to prove the hardship with concrete evidence, and the party demanding production has to be ready to explain why the material matters. Mishandling either side of that exchange is expensive: a requesting party can see its demands cut back or shifted onto its own budget, and a responding party that stonewalls without proper support can face sanctions as severe as a default judgment.
The Proportionality Test Under Rule 26(b)(1)
Rule 26(b)(1) lets parties seek any nonprivileged information relevant to a claim or defense, but only if the request is proportional to the needs of the case. Courts weigh six factors: the importance of the issues at stake, the amount in controversy, each party’s relative access to the information, the parties’ resources, the importance of the discovery to resolving the dispute, and whether the burden outweighs the likely benefit.1Cornell Law School. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery No single factor controls. An expensive request can survive if the case is large or important enough; a cheap request can fail if the information adds nothing.
Every discovery response involves some burden. Reviewing documents, pulling records, and coordinating with counsel all take time and money. The burden becomes “undue” only when it is unreasonable relative to the value of the information.
Electronically stored information is where these fights get expensive fast. Restoring data from obsolete backup systems or hiring forensic specialists to pull files off decommissioned servers can run into tens of thousands of dollars before anyone reviews a single document. Rule 26(b)(2)(B) addresses exactly this situation: a party is not required to produce electronically stored information from sources it identifies as not reasonably accessible due to undue burden or cost.1Cornell Law School. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery
Privilege review drives another large share of the cost. When a request sweeps in millions of emails, the legal team has to screen each one for attorney-client privilege or work-product protection before anything goes out. That review can dwarf the cost of collecting the data. Courts fold the review burden into the overall analysis, especially when the same information could come from a narrower request or a different source.
Judges also have independent authority to limit discovery. The court must step in when discovery is unreasonably duplicative, available from a more convenient source, or outside the scope Rule 26(b)(1) allows.1Cornell Law School. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery In practice, though, the responding party almost always has to raise the issue first.
Who Has to Prove What
Many discovery motions turn on this point: the party claiming undue burden has to prove it. Vague complaints about cost do not work. The responding party needs concrete evidence, including dollar figures, time estimates from IT staff, and affidavits explaining the technical difficulty of compliance.
For inaccessible electronically stored information, Rule 26(b)(2)(B) says so expressly: the party resisting discovery must show the sources are not reasonably accessible because of undue burden or cost.1Cornell Law School. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery Even after that showing, the court can still order production if the requesting party demonstrates good cause. Proving inaccessibility shifts the question to whether the need justifies the cost anyway.
Moving the proportionality language into Rule 26(b)(1) did not put the full burden on the requesting party. The advisory committee said as much directly.1Cornell Law School. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery Both sides share responsibility. The requesting party should be able to explain why the information matters; the responding party should be able to explain why producing it is unreasonable. On any given factor, the party with better access to the relevant facts carries the practical burden.
How to Object Without Waiving
A party served with document requests under Rule 34 has 30 days to respond. The response must either agree to produce the material or state the grounds for objecting with specificity.2Legal 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 Missing the deadline or filing a generic objection is one of the fastest ways to lose an otherwise good argument.
Specificity Beats Boilerplate
“Overly broad and unduly burdensome” without more is essentially worthless. Courts routinely treat vague objections as waived because they give the requesting party and the judge nothing to evaluate. The objection has to identify which part of the request is problematic and why. If cost is the issue, provide the number. If the timeframe is too broad, say what a reasonable one would be.
Affidavits from people with firsthand knowledge of the production carry real weight. An IT director who can testify that restoring a particular backup system requires discontinued hardware and 200 hours of specialist labor tells the court far more than a lawyer’s assertion that compliance would be “unduly burdensome.” Vendor fees, internal labor estimates, and projected review hours let the judge actually run the cost-benefit analysis.
The objection should also state what the party is willing to produce. Agreeing to produce the last three years of records while objecting to a ten-year scope signals good faith and keeps the court from reading the objection as obstruction.
Waiver and Certification Risk
Every discovery objection has to be signed by an attorney, and that signature carries teeth. The signing attorney certifies that the objection is consistent with the rules, not filed for an improper purpose, and not unreasonable given the needs of the case. If the court finds the certification baseless, it must impose sanctions, including the opposing party’s attorney fees.1Cornell Law School. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery
Privilege claims deserve particular care. When withholding documents on privilege grounds, the responding party must describe the withheld materials specifically enough for the other side to evaluate the claim without revealing the privileged content.1Cornell Law School. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery Failing to provide that notice can be treated as a waiver of the privilege entirely. Cutting corners during the response window to save time can turn into a catastrophic problem later.
Meet and Confer Before Any Motion
Before filing a discovery motion, the moving party must certify that it tried in good faith to resolve the dispute without the court.3Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions This is not a formality. Judges can tell the difference between a real negotiation and a perfunctory email sent the afternoon before the motion lands.
These conversations often produce compromises no judge would think to impose. Parties agree to narrow a request to specific custodians or date ranges, use targeted search terms instead of producing entire email accounts, or phase production so the most likely relevant sources go first. For electronically stored information, small changes in search parameters can cut review volumes by orders of magnitude.
Even when the discussion does not resolve everything, it sharpens what remains in dispute. Document what was agreed and what was not. That record is the foundation for any later motion, and it establishes the good faith required both for the motion itself and for recovering attorney fees if the motion succeeds.
Protective Orders and Cost-Shifting
When negotiation fails, the burdened party can move for a protective order under Rule 26(c). The motion must include a certification that the party already attempted to resolve the dispute in good faith.1Cornell Law School. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery The court can deny the request outright, narrow it, impose conditions, or shift costs to the requesting party.
Cost-shifting is one of the court’s most effective tools. Once the requesting party is paying some or all of the production bill, it becomes selective about what it actually needs. Courts weighing cost-shifting typically consider how well the request targets relevant information, whether the information is available elsewhere, the production cost relative to the amount at stake, each party’s resources, and which party is better positioned to control costs. These factors track the Rule 26(b)(1) proportionality analysis closely.
Courts can also cap total spending on data retrieval, limit the number of depositions, restrict discovery to a particular time period, or require the parties to use technology-assisted review. The resulting order binds both sides for the rest of the case, and violating it triggers the same sanctions as disobeying any other court order.
Clawback Orders to Cut Privilege Review Costs
One of the largest costs in modern discovery is screening documents for attorney-client privilege before production. In cases involving millions of electronic files, this review can cost more than the collection itself. Federal Rule of Evidence 502(d) provides a shortcut: a court can order that producing privileged material during litigation does not waive the privilege, in the current case or in any other federal or state proceeding.4Legal Information Institute. Federal Rules of Evidence Rule 502 – Attorney-Client Privilege and Work Product; Limitations on Waiver
With a 502(d) order in place, a party can produce documents faster and retrieve any privileged material afterward without losing the privilege. The advisory committee notes say these clawback arrangements exist to “avoid the excessive costs of pre-production review for privilege and work product.”4Legal Information Institute. Federal Rules of Evidence Rule 502 – Attorney-Client Privilege and Work Product; Limitations on Waiver Without the order, inadvertent disclosure can waive the privilege permanently, which pushes parties into exhaustive document-by-document review to avoid the risk.
If privilege review is a significant cost driver, request a 502(d) order early, ideally at the Rule 26(f) conference. It does not eliminate review, but it removes the worst-case consequence of a mistake, which lets you use faster and cheaper screening methods.
Protections for Subpoenaed Non-Parties
Non-parties pulled into someone else’s litigation through a subpoena get additional protection under Rule 45. They have no stake in the outcome and should not have to absorb significant costs for someone else’s case.
The duty runs both ways. The party issuing the subpoena must take reasonable steps to avoid imposing undue burden or expense on the recipient, and the court must enforce that duty, including by imposing sanctions such as lost earnings and attorney fees when the issuing party fails to comply. A subpoenaed non-party can move to quash or modify, and the court must grant that relief when the subpoena imposes an undue burden.5Legal Information Institute. Federal Rules of Civil Procedure Rule 45 – Subpoena
Even when the court orders compliance, it must protect non-parties from significant expense. If the subpoena demands trade secrets, confidential business information, or opinions from an expert who was not retained for the case, the court can require the requesting party to compensate the subpoenaed person and show a substantial need that cannot be met any other way.5Legal Information Institute. Federal Rules of Civil Procedure Rule 45 – Subpoena
What Happens If You Get It Wrong
The consequences of mishandling discovery go well beyond losing an argument over a single request. Rule 37 gives courts a graduated set of tools, and the severe end can decide the case.
When a court grants a motion to compel, it must order the losing side to pay the winner’s reasonable expenses, including attorney fees. The award is mandatory unless the losing party’s position was substantially justified, the winner did not try to resolve the dispute first, or other circumstances would make the award unjust.3Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions The same rule works in reverse. If the court denies the motion, the requesting party may owe fees to the party that successfully resisted. Mixed outcomes allow the court to split the costs.
A party that ignores a discovery order faces much worse. The court can treat disputed facts as established in favor of the other side, bar the noncompliant party from supporting or opposing specific claims or introducing certain evidence, strike pleadings in whole or in part, dismiss the case, enter default judgment, or hold the party in contempt. These sanctions apply on top of the mandatory fee award for the expenses the noncompliance caused.3Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions Courts generally escalate rather than jump straight to dismissal, but continued refusal to comply moves predictably up the ladder.
Separately, a party that fails to disclose information required under the initial disclosure rules can be barred from using that witness or evidence at trial, at a hearing, or on any motion, unless the failure was harmless or substantially justified.3Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions Holding back a key document in discovery and then trying to use it at trial is exactly the move that triggers that exclusion.