RulesofCivilProcedure.com Civil Procedure · Every State

§ 2034.730.Monetary sanctions; exception

Title 4. Civil Discovery Act · Chapter 18. Simultaneous Exchange of Expert Witness Information · Article 5. Motion to Submit Tardy Expert Witness Information · Enacted 2004 · no amendments on record · Last verified July 29, 2026

In one sentenceSection 2034.730 requires the court to impose a monetary sanction against any party, person, or attorney who unsuccessfully makes or opposes a motion to submit tardy expert witness information, unless that side acted with substantial justification or the sanction would otherwise be unjust.

Full Text of § 2034.730

Text size

The court shall impose a monetary sanction under Chapter 7 (commencing with Section 2023.010) against any party, person, or attorney who unsuccessfully makes or opposes a motion to submit tardy expert witness information, unless it finds that the one subject to the sanction acted with substantial justification or that other circumstances make the imposition of the sanction unjust.

Plain-English Summary

This section closes out Article 4's sanctions scheme for expert-witness discovery by attaching a financial consequence to losing the tardy-disclosure motion authorized in Section 2034.710. Whoever loses, whether that is the party that asked for leave to submit late expert information and did not get it, or the party that fought the request and lost, faces a monetary sanction under the general sanctions chapter, Chapter 7.

That sanction is not automatic in every sense; the court still has an escape hatch. It need not impose the sanction if it finds that the losing side acted with substantial justification, meaning the position taken, win or lose, was a reasonable one to argue, or if the circumstances of the case make a sanction unjust for some other reason. But those are the only two ways out. Absent one of them, the statute uses mandatory language, the court shall impose the sanction, not may, which puts real financial risk behind bringing or opposing this kind of motion without a solid basis.

Frequently Asked Questions

Who can be sanctioned for losing a motion under Section 2034.710?

Any party, person, or attorney who unsuccessfully makes or opposes the motion to submit tardy expert witness information.

Is the sanction under this section mandatory?

Yes, the court must impose it, unless it finds the losing side acted with substantial justification or the sanction would otherwise be unjust.

What kind of sanction does this section authorize?

A monetary sanction imposed under Chapter 7, the general discovery sanctions provisions beginning with Section 2023.010.

Can the party who wins a motion to submit tardy expert information still be sanctioned?

No. The sanction runs against whoever unsuccessfully makes or opposes the motion, not against the prevailing side.

Amendment History

(Added by Stats.2004, c. 182 (A.B.3081), § 23, operative July 1, 2005.)

Source & verification. Section text is reproduced verbatim from the West's Annotated California Codes / Thomson Reuters. Enacted by the California Legislature. Last verified July 29, 2026. · Official source
Also known as: ccp 2034.730 sanctions tardy expert witness motionmonetary sanction losing motion expert disclosurecost of unsuccessful motion late expert information