Ex Officio Law and Legal Definition

Ex Officio is a Latin term meaning "by virtue of one's office". It is often used in the context of legislative bodies to automatically confer membership on a subcommittee to a chairman and top minority member of a committee. In the U.S. Senate, for example, Senate rules allow the chairman and ranking minority member of a committee to participate in any of the subcommittees of that committee, but generally not to vote.