Usability theory has its roots in ICT. It has been adapted and applied in the workplace. Usability marks a shift from a functional-technical perspective on workplaces to a focus on user experience and the interaction between users and their work environments. Usability of workplace theory describes these interactions in terms of culture, context, and situation and relates them to core components of usability: effectiveness, efficiency, and satisfaction. The usability perspective can be applied in strategic, developmental, operational, and evaluative phases of workplace projects as well as in workplace-related processes and continuous improvement. Usability of workplaces is discussed as a theoretical approach and regarding the application in usability briefing, usability evaluations, and usability management.