In manufacturing plants, a review of the labor environment is as important as efficiency of manufacturing process. In the food industry, high level of labor motivation is as important as preventing contamination with foreign matters and with drugs by malicious persons. In such circumstances recognizing individual persons is very difficult because of same uniform of caps, masks and wears are used. This system is able to identify individual persons by ID number given by the system to all the labors at their entry to the plant. In addition, the system can monitor position, attitude and movement of each labor individually. If the system detects abnormality in monitored labor notification is sent to an appropriate factory manager depending on predefined rules.