Predetermined motion time systems (PMTS) Predetermined motion time systems (PMTS) are work measurement systems based on the analysis of work into basic human movements, classified according to the nature of each movement and the conditions under which it is made. Tables of data provide a time, at a defined rate of working, for each classification of each movement. The first PMTS (since designated as "first-level" systems) were designed to provide times for detailed manual work and thus consisted of fundamental movements (reach, grasp, move, etc) and associated times. Large amounts of research, data collection, analysis, synthesis, and validation are required to produce PMTS data and the number of such systems is very low. "Higher level" systems have since been devised, most commonly by combining these fundamental movements into common, simple manual tasks. Such higher level systems are designed for faster standard setting of longer cycle activity. Critici