An article of furniture having a construction adapted to efficiently accommodate electrical components. The article of furniture includes a frame or chassis having support leg assemblies, and a beam connected to the support leg assemblies to which a channel is mounted. The support leg assemblies include work surface supports which support work surfaces at adjustable heights above the channel, and a gap between the work surfaces allows access to the electrical system within the channel. The electrical system is modular in design, and includes a series of components that are connected to one another in a manner that the location of electrical outlet modules is easily adjusted. The channel has a plurality of knock-out openings which are selectively used for locating electrical outlets at any desired position along the channel.