A work appropriateness determination system according to an aspect of the present invention is provided with: an authentication device that identifies a worker on the basis of characteristics of the worker, and outputs information identifying the worker； a biometric sensing device that acquires biometric information of the worker, and outputs the biometric information； a work sensing device that detects the load of a work currently carried out by the worker, and outputs work information indicating the work load； a storage device； and a signal processing device. The signal processing device accumulates the information identifying the worker, the biometric information, the work information, and time information in association with one another in the storage device while the worker carries out work, estimates the biometric information of the worker at present on the basis of the correlation between temporal transition of the biometric information and temporal transition of the work information in the past stored in the storage device, and determines the appropriateness of the work of the worker at present by comparing the estimated biometric information with the biometric information acquired by the biometric sensing device.Selon un aspect, la présente invention concerne un système de détermination de la pertinence du travail comprenant : un dispositif d'authentification qui identifie un ouvrier en fonction de ses caractéristiques, et génère des informations identifiant l'ouvrier ； un dispositif de détection biométrique qui acquiert des informations biométriques concernant l'ouvrier et génère lesdites informations biométriques ； un dispositif de détection de travail qui détecte la charge d'un travail en cours d'exécution par l'ouvrier et génère des informations de travail indiquant la charge de travail ； un dispositif de stockage ； et un dispositif de traitement de signal. Le dispositif de traitement de signal accumule les informations identifiant l'ouvrier, les inform
