Gilad and Karni (1999) developed a more comprehensive ergonomic expert system (ERGOEX) for the ergonomic analysis and evaluation of the workplace design by professionals (e.g. industrial engineers, ergonomists, medical staff) or workers. The system incorporates three categories of knowledge: workplace design (equipment, anthropometrics, posture), environmental conditions (light, noise, vibration, climate) and evaluation and failure analysis (biomechanics, methods and measurements, checklists, accumulated trauma). The system accepts input data on the anthropometry of the worker and the physical layout dimensions of his/her workplace, on the worker's tasks, and on the characteristics and the physical dimensions of the equipment that the worker uses. Based on the inputted data the system generates both general and specific recommendations along with suggestions for improving the design of the workplace and guidance on a recommended work layout.