A facility for performing contingent redaction of one or more portions of a document is described. The facility receives a request to materialize an identified document that identifies an entity for which the identified document is to be materialized. For a portion of the document identified by the request, the facility retrieves a criterion that must be satisfied to include the portion in a materialization of the document identified by the request. The facility evaluates the criterion for the entity identified by the request with respect to a present time. The facility causes the document identified by the request to be materialized for the entity identified by the request in a manner consistent with the result of the evaluation.