What information has to be on a privilege log and can you produce a categorical or metadata privilege log instead?

When a party withholds documents from discovery on a claim of privilege, it generally must describe what it is withholding well enough that the requesting party and the court can evaluate the claim. This description is what practitioners call a privilege log. The duty to expressly assert privilege and describe the withheld material is rooted in the Federal Rules of Civil Procedure, but the exact form and timing are shaped by local rules, standing orders, and judges. Always confirm the requirements in your jurisdiction, since state courts and other countries handle this differently.

What a Privilege Log Typically Contains

A traditional document-by-document log gives enough detail to assess each claim without revealing the privileged content itself. Common fields include:

• A unique identifier or control number for each withheld item
• Document type or format (email, memo, attachment)
• Date
• Author or sender, and all recipients (including cc and bcc)
• A general subject description that conveys nature without disclosing substance
• The privilege asserted (for example, attorney-client privilege or work-product protection)
• The basis for the claim, often noting that an attorney was involved

The goal is to let the other side test the claim and the court rule on it.

Categorical and Metadata Logs

You are often not required to produce a document-by-document log. Many courts and the Federal Rules contemplate alternative approaches that still let parties assess the claim.

• Categorical logs group similar withheld documents into defined categories (for example, “communications between in-house counsel and the project team about the contract dispute”), describing the category rather than each item. This is widely accepted for large or repetitive collections.
• Metadata logs draw the descriptive fields automatically from document metadata (sender, recipients, date, type), reducing manual effort in high-volume electronic productions.

These alternatives are frequently encouraged to control cost and burden, but they are not automatic. The preferred course is to meet and confer early and reach agreement on log format, ideally memorialized in a discovery plan or protective order. The Sedona Conference has published influential guidance favoring proportional, cooperative approaches to privilege logging.

For more on related concepts, see /topics/ediscovery/.