29 CFR 511.9: Requirements for quorum and decisions.

Two-thirds of the members of an industry committee shall constitute a quorum. Approval by a majority of all of the members of an industry committee or subcommittee shall be required for its report. Except as otherwise provided in this part, the chairperson of the industry committee or subcommittee may make other decisions for the committee or subcommittee, but each such decision shall be subject to approval of a majority of the members present if any member objects.