A work information management system comprising: - a terminal device , and - a sensor device , wherein the terminal device 1 includes a receiver , a signal analyzing unit , a display unit , and a data storage unit , wherein the sensor device includes an object provided with a wearable sensor that is worn by a worker and a transmitter , wherein the sensor device acquires sensor data from the wearable sensor , and the transmitter transmits the sensor data to the terminal device ; the wearable sensor acquires, from the object , work data including identification information of the object , a place of the object , a user of the object , and time when the object is operated, and transmits the acquired work data and the sensor data to the terminal device , the terminal device determines a work content associated with certain motions or positions of the worker based on the sensor data and the work data received from the wearable sensor and a pattern library indicating a pattern of sensor values stored for each wearable sensor and each work content, and outputs a determination result on the display unit , and the wearable sensor senses, from the object , the sensor data obtained by touching a sensing assistance with concave-convex shaped protrusions within a range of a predetermined position attached to the object . - a terminal device , and - a sensor device , wherein the terminal device 1 includes a receiver , a signal analyzing unit , a display unit , and a data storage unit , wherein the sensor device includes an object provided with a wearable sensor that is worn by a worker and a transmitter , wherein the sensor device acquires sensor data from the wearable sensor , and the transmitter transmits the sensor data to the terminal device ; the wearable sensor acquires, from the object , work data including identification information of the object , a place of the object , a user of the object , and time when the object is operated, and transmits the acquired work data and the sensor data to the terminal device , the terminal device determines a work content associated with certain motions or positions of the worker based on the sensor data and the work data received from the wearable sensor and a pattern library indicating a pattern of sensor values stored for each wearable sensor and each work content, and outputs a determination result on the display unit , and the wearable sensor senses, from the object , the sensor data obtained by touching a sensing assistance with concave-convex shaped protrusions within a range of a predetermined position attached to the object . wherein the terminal device 1 includes a receiver , a signal analyzing unit , a display unit , and a data storage unit , wherein the sensor device includes an object provided with a wearable sensor that is worn by a worker and a transmitter , wherein the sensor device acquires sensor data from the wearable sensor , and the transmitter transmits the sensor data to the terminal device ; the wearable sensor acquires, from the object , work data including identification information of the object , a place of the object , a user of the object , and time when the object is operated, and transmits the acquired work data and the sensor data to the terminal device , the terminal device determines a work content associated with certain motions or positions of the worker based on the sensor data and the work data received from the wearable sensor and a pattern library indicating a pattern of sensor values stored for each wearable sensor and each work content, and outputs a determination result on the display unit , and the wearable sensor senses, from the object , the sensor data obtained by touching a sensing assistance with concave-convex shaped protrusions within a range of a predetermined position attached to the object . <EOS>