In modern road construction the work becomes even more intensive, requires maximum attention and concentration; therefore, practice and experience have been examined in the organization and implementation of labour protection measures. The objective is to study to what extent the road construction workers are influenced by dust containing crystalline silica that occurs in the process of asphalt concrete milling, based on Latvian and foreign studies. Additionally, the analysis is provided and the assessment of risk factors that occur during the milling process: noise, vibration and ergonomic risks.