An evaluation of our regional register of noise-exposed persons comprehended within the framework of medical ability and control examinations of workers was given here. On the occasion of medical ability examinations of workers at the beginning of their employment 448 persons were examined. 49 of them had to undergo an additional ENT investigation because working under noise conditions in future. 5.4 p.c. of those were not passed as fit for working in noise environment. On the occasion of medical control examinations of workers during their employment 1893 persons were examined now. 184 of them had to undergo an additional ENT investigation because of their exposition to noise. Following that, it was necessary for 1.4 p.c. of the latter to change their working place, but for 0.6 p.c. of them an announcement to suspicion of occupational hearing damage must be made. In connection with the data above mentioned great attention must be payed to early ear diseases on the one hand, and to hearing damages existing before on the other hand.