Abstract: A working furniture item or table has a modular construction and is usable as an office and conference table and as a work place for electronics engineers, computers, laboratories and technicians. In order to create a working table which functions correctly and which is subsequently reequippable to comply with individual ergonomic requirements, vertical sections associated with a table top have, in their cavities, a vertical adjustment device for a table top arranged as a first working plane. A horizontal cable duct transverse beam is provided as a reinforcing connection between the vertical sections on either side of the table top. The beam permits an integrated cabling or wiring with further working planes arranged in accordance with an ergonomic space concept.