A system is provided having a plurality of sensors for affixing to a person's torso, hands, feet, head, etc. The function of each sensor is to determine the distance between itself and the other sensors to ascertain the distance between the hands and feet, for instance, in order to measure the relative activity of a person's hands and feet. Other sensors, placed on the individual or in the individual's environment, may obtain biological data relating to the person, such as heart pulse, blood pressure, or data relating to the individual's attention level, i.e., gaze data. The system further includes a processor having a memory for storing data collected from the sensors. The data collected by the sensors and stored in the memory provide at least information about different types of movements associated with a particular set of tasks. The processor is programmed with a set of instructions to relate the movements associated with work with different levels of productivity, and even different levels of performing work, e.g., whether the work is being performed carefully or not, i.e., whether the same movements for a given task vary from slow to quick or whether they have a constant pace. The processor is preferably in a remote location and obtains the sensed data via a network. The system is also capable of analyzing sensed data obtained from different individuals, providing feedback to the individuals regarding their level of productivity, either alone or as a group, and offering advice on improving their level of productivity.