Noise is one of the most prominent physical agents in the work environment. Noise reduction is becoming every year urgent task, which is placed in front of a wide range of experts from different fields of activity. To measure the noise there are standardized methods and rules to be followed and criteria for assessing noise and sophisticated measuring instruments such as sound-level meter, dosimeter and calibrators. At the same time develop more reliable methods of predicting and calculating the noise level, and the methods and structures for protection against noise. The final work describes the harmful effects of noise in the work environment and to reduce noise in Croatia is regulated by the Law. This paper describes the size used in the measurement, such as A-weighted sound pressure level, the equivalent noise level, noise rating level and the level of exposure. Shows how to determine the noise exposure at work, describes the approach to measuring by-step, define different strategies measurements such as measurements based on work tasks, measurement-based workplaces and all-day measurements, and provides guidance for selecting appropriate strategies measurements. The final paper shows a method of measuring the stonemason's workshop Roksandic and analysis of results. This paper will explain the terms such as upper exposure action values, lower exposure, personal protective equipment for hearing protection, measurement uncertainty and show an example of a measurement report which shows the information that must be listed as general data, analysis of the work, measuring instruments, measurements and results. In conclusion will summarize the problem and its solution assumptions, and then list the protection measures in the stonemason workshop Roksandic.