The most important right which lawyers establish between them and their client is privilege. In order to assert privilege and withhold potentially relevant documents, the attorney or litigation support professional must fill out a privilege log associated with each document. The withholding party must provide enough information so that the reviewing attorney of the opposing party can fairly determine whether the document is privileged. There are four main types of privilege which can be claimed by an attorney - Attorney Work Product, Attorney-Client, Attorney Advice and Joint Defense. Privilege is essential, tricky, and can be lost easily. Creating privilege logs and asserting privilege is a tedious chore of great importance with heavy consequences for misuse. It is arduous to say that a document is privileged and thereby claiming that there are relevant documents but you are going to withhold them. Legal professionals must spend 2, 3, 4 minutes per document simply asserting privilege. This task is crucial, as under-asserting privilege could lead to giving up privilege for all documents. At the same time, over-asserting could lead to a time consuming in camera review or an expensive redo of your eDiscovery project.