US Patent 7850071 Portable tool and work management data collection system

A work management data collection system 1 is provided with a data collection mechanism in a tool 2, and by counting a number of times a work operation has been executed or the like, obtains a work data identifying the work task that has been executed and detects a time data required for the work task. The system is provided with an RFID tag 3a on an ID card 3 held by a worker, and by writing data into the ID card 3 of the worker who carried out the work task, using an RFID reader/writer 4 provided on the tool 2, the system obtains data necessary for the work management from the ID card 3 of the worker.