A system for monitoring the use of a hearing protection unit comprising a left ear hearing protection device (14) and a right ear hearing protection device (12) to be worn by a user (10) within a monitoring area, an arrangement (16, 18, 22, 1006, 2006) for wirelessly detecting the position of the left ear hearing protection device (14) and the position of the right ear hearing protection device (12) within the monitoring area, a device (22) for judging whether a predefined condition for the detected positions of the left ear hearing protection device and the right ear hearing protection device is fulfilled, and a device (22) for outputting a wearing compliance signal depending on whether the predefined condition is found to be fulfilled by the judging device or not.