A device for analyzing a worker's work state, the analysis involving generation of determination data for determining whether worker's manual work is performed in a predetermined work order. This device includes imaging and setting units. The imaging unit images, a work video, a worker's manual working state in which the worker repeatedly performs predetermined work. This predetermined work is performed by repeating a plurality of fundamental work operations by hand. Based on a predetermined motion which is previously set for each of the fundamental work operations, the setting unit sets delimitation information to delimit the work video every fundamental work operation at a timing when the predetermined motion is detected. In the device, a generation unit generates determination data which includes both the imaged work video and the set delimitation information. Based on the determination data, the worker's manual work can be analyzed in various ways.