Silvagni v. Wal-Mart Stores, Inc., 320 F.R.D. 237

Background

Plaintiff slipped on a substance in a Wal‑Mart store and sued for negligence, seeking past and future medical expenses and economic damages. The case was removed to federal court on diversity grounds.
The parties agreed to initial disclosures and deadlines; Plaintiff served an initial damages computation and then served 19 supplemental initial disclosures over the course of the case and multiple expert report supplements.
Defendant moved to exclude various damages disclosures under Rule 37(c), arguing the disclosures were untimely and prejudicial to its ability to defend.
The Court described the governing disclosure and sanction rules, emphasizing that initial damages computations must reflect information reasonably available at the time and must be supplemented timely as new information becomes available.
The Court found the motion inadequately developed and factually disorganized, declined to decide the merits, denied the exclusion motion without prejudice, and instructed Defendant to file separate, focused motions for each challenged disclosure if it wished to renew the requests.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether Plaintiff’s multiple supplemental damages computations violated Rule 26(a)(1) and Rule 26(e)	Plaintiff says she disclosed damages as soon as the information was reasonably available and supplemented timely as the case progressed	Defendant says Plaintiff should have included all pertinent damages in the initial disclosure and later supplements prejudiced its defense	Court held that a violation was not established on the current record; inquiry depends on when information was reasonably available and timeliness of supplementation
Whether exclusion under Rule 37(c)(1) is the appropriate remedy for any disclosure violation	Plaintiff argues preliminary computations and later supplements are permissible and experts may flesh out methods later	Defendant urges exclusion of specific damages as prejudicial and disruptive	Court held exclusion is a severe sanction used sparingly; other sanctions or discovery remedies often more appropriate; Defendant must show substantial prejudice or bad faith to justify exclusion
Burden and standard for proving harmlessness or substantial justification	Plaintiff must show supplementation was timely and not prejudicial	Defendant must show noncompliance and then prove prejudice or that no lesser remedy suffices	Court explained the sanctioned party bears burden to prove harmlessness or substantial justification; movant bears initial burden to show noncompliance
Procedural adequacy of Defendant’s motion to exclude	Plaintiff contends Defendant’s broad, disorganized motion fails to identify facts supporting exclusion for each disclosure	Defendant contends briefing adequately identifies several late disclosures and prejudice	Court held Defendant’s motion was insufficiently developed and factually disorganized; ordered separate, specific motions for each challenged disclosure if renewed

Key Cases Cited

Ollier v. Sweetwater Union High School Dist., 768 F.3d 843 (9th Cir.) (initial disclosures limit surprise and trial by ambush)
R & R Sails, Inc. v. Insurance Co. of Pennsylvania, 673 F.3d 1240 (9th Cir.) (discusses courts’ discretion when exclusion is tantamount to dismissal)
Yeti by Molly, Ltd. v. Deckers Outdoor Corp., 259 F.3d 1101 (9th Cir.) (Rule 37(c) enforces disclosure requirements and gives courts broad discretion)
Jackson v. United Artists Theatre Circuit, Inc., 278 F.R.D. 586 (D. Nev.) (initial disclosures must be made based on information reasonably available and courts apply Rule 26 with common sense)
Tutor‑Saliba Corp. v. City & County of San Francisco, 218 F.R.D. 219 (N.D. Cal.) (preliminary damage computations may suffice early in a case but must be updated as information becomes available)
Goodman v. Staples The Office Superstore, LLC, 644 F.3d 817 (9th Cir.) (courts exercise discretion to avoid unjust exclusion sanctions and prefer deciding cases on the merits)