To measure an action of a worker and analyze the measurement data to determine the type of the action and also determine the type of a work, thereby providing information for improving the work itself. A work information processing apparatus (110) receives, via an antenna (143), detection values obtained by sensors (101A, 101B, 101C); determines, from an action information table, actions corresponding to the received detection values; arranges the actions in time sequence; and determines, from a work dictionary table, a work corresponding to the actions arranged in time sequence, thereby determining the actions and the work for each of workers.