Walden Two consists of four loose classes or groupings of people by occupation (though they are not akin to strict economic classes): "Planners", "Managers", "Workers", and "Scientists". Walden Two has a constitution that provides for a ""Board of Planners"", which is Walden Two's "only government", though the power they wield only amounts to that, approximately, of community organizers. The "Board of Planners" was conceived of while Walden Two was still in its earliest theoretical stages, and there are "six Planners, usually three men and three women", who are "charged with the success of the community. They make policies, review the work of the Managers (heads of each area of labor), keep an eye on the state of the nation in general. They also have certain judicial functions." A Planner "may serve for ten years, but no longer." A vacancy on the Board of Planners is filled by the Board "from a pair of names supplied by the Managers". Furthermore, the Walden Two constitution "can be changed by a unanimous vote of the Planners and a two-thirds vote of the Managers".