 He co-invented the now widely accepted concept of the office as a series of "activity settings" in 1983.In an activity settings-based environment, multiple settings are provided which have different technical and physical attributes assembled to support the variety of performance "modes" that take place in a work environment.The term "activity based working" was first coined in the book the "Art of Working" by Erik Veldhoen, a Dutch consultant and author of the book "The Demise of the Office".