PROBLEM TO BE SOLVED: To support determination of productivity at a production site. A productivity determination support device 50 includes a detection unit 552 and an output unit. The detection unit 552 detects changes in the monitoring target set in advance as factors that affect the productivity of the production site, based on a plurality of captured images of the production site where the product is manufactured. The output unit outputs information corresponding to the change in the monitoring target detected by the detection unit 552. [Selection diagram] Fig. 4
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