Apparatus 4 for monitoring a work environment, comprises at least one sensor for sensing working environment parameters, a microcontroller, and a rechargeable battery. The apparatus is configured to perform at least one of: monitoring working environment physical conditions, monitoring a user’s physiological vital signs, detecting hazards breaching a safe working threshold, notifying users about the hazardous event, or notifying a user’s supervisor about the hazardous scenario and user behaviour to take action or ignore local alert based on an internal algorithm. The apparatus further comprises a glasses frame docking system 5, 6having means for quick and secure attachment/detachment of the apparatus to a frame arm 2 of a safety glasses. The docking system may include an elastic lug or loop for insertion of the frame arm and retention based on friction force, a locking cavity and corresponding protrusion, a male-female joint, or a magnetic assembly. In a second aspect an external auxiliary signage device is arranged to communicate with an apparatus for monitoring a work environment and is wirelessly paired with the apparatus.
