In this thesis, research was carried out on the measurement of noise in the production industrial process and its impact on workers, as well as ways of protection. A Svantek sound level meter, model SVAN 959, was used. Three factories were visited, the Glass Factory in Pula, the Rovinj Tobacco Factory in Kanfanar and the TUBUS company in Galižana, each with its own production industrial process. The obtained results were compared with the Ordinance on the protection of workers from exposure to noise at work. The glass factory is a very loud facility, as is the company TUBUS, which deals with metal processing. In them, it is mandatory to use protective equipment against noise that in many places exceeds the legal limit. In the glass factory, the nozzels on the tempering furnace were replaced with chokes, which led to a reduction in noise levels. The situation in the Tobacco Factory is very good, considering that it is also the most modern factory where a lot of importance is given to the protection of workers. In certain places within the factory, the noise level exceeds the permitted limits, but the use of protective equipment against noise is therefore mandatory. The company TUBUS deals with processing of metals, which is a very noisy industry. The use of protective equipment against noise is prescribed. It would be possible to further reduce noise levels with noise absorbers placed around machines and workstations, but this would lead to a reduction in the ability to process large pieces of material, which is not in the company's interest. As technology advances and develops, so does the awareness of worker protection. A lot of attention is therefore given to the protection of workers and ways to improve working conditions in production industrial processes.